Freshwater aquarium

As we all know they exist saltwater fish and freshwater fish. Both can be kept alive in aquariums. But for this we need to know everything there is to have for each type of aquarium. In this space is everything you need to have a freshwater aquarium in which our fish can live in the best conditions.

Tips, ideas, material and details, for the fish to enjoy a habitat very similar to the natural one, we know that it is not the same, but if we like fish, it is a good way to take care of them, informing us on the subject and the characteristics or materials that we must know and have so that freshwater fish can survive in our freshwater aquarium.

We cannot forget that they are living beings and that we must take care of them.

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Full path: Of fishes » Freshwater aquarium

Amazonian lakes reach 41°C: ecological alert

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Temperatures reach up to 41°C in Amazon lakes: dolphins are dying, water levels are falling, and European experts are calling for urgent monitoring.

Science Week at the Seville Aquarium: Amphibians in Focus

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Amphibian exhibition and workshop from November 3rd to 9th at the Seville Aquarium. Activities included with admission. Schedule and details.

Caring for Swordtail Xipho Fish in an Aquarium

The best freshwater aquarium fish: species, compatibility, and essential care

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Guide to choosing freshwater fish: species, compatibility, parameters, and care for a beautiful, stable, and easy-to-maintain aquarium.

Importance of Aquatic Oxygenation: Science, Methods, and Key Uses

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What is dissolved oxygen, why it matters, and how to oxygenate water in aquaculture, irrigation, and treatment. Methods, levels, and measurement.

Best species de peces to have at home: a practical guide for beginners and experts

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Discover the best fish for home: easy, compatible, and suitable for small aquariums. Specifications, liters, and tips for choosing the right one.

Best species de peces to have at home: complete guide to selection, care, and compatibility

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Choosing the best fish for your aquarium: easy and advanced species, parameters, liters, and compatibility. A practical guide for a stable tank.

Swordtail Fish: Complete Care, Varieties, and Breeding Guide

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Swordtail Fish Care: Parameters, Size, Diet, Companions, Health, and Breeding. A Practical and Comprehensive Guide to a Successful Aquarium.

Expert Guide to the Swordtail (Xiphophorus hellerii): Care, Breeding, Feeding, and Compatibility

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Xipho Fish Care: Parameters, Feeding, Breeding, and Compatibility. A Clear and Practical Guide to a Healthy Aquarium.

Zeolite in Aquariums: Complete Guide to Use, Types, and Maintenance

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Zeolite in aquariums: uses, dosage, and maintenance. Learn how to use it in freshwater and marine aquariums for crystal-clear water and stable parameters.

Caridina japonica (Caridina multidentata): care, parameters, compatibility and breeding

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Complete Caridina japonica care: parameters, feeding, compatibility, brackish water breeding, and algae-fighting tips. A practical and detailed guide.

News, activities, and rates at the Seville Aquarium

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Visit the Seville Aquarium: discover themed areas, unique activities, new animals, and save with an annual pass.

Category highlights

Fake disc or Heros severus: care, compatibility and all about its maintenance

Learn how to care for the false discus (Heros severus): feeding, compatibility, breeding, and key parameters for a spectacular aquarium.

Giant Freshwater Shrimp: Complete Guide, Care, and Facts

Learn all about the giant freshwater shrimp: care, habitat, feeding, and tips for keeping it healthy in your aquarium.

Complete beginner's guide to fishkeeping: expert advice for beginners

Discover how to get started in fishkeeping step by step: tips, care, and equipment for your first aquarium. Essential guide for beginners.

El Palote Dam: Fish return after the drought and fishing is back in León.

El Palote Dam recovers level and receives planting de peces. Reactivation of fishing and the environment are key to León's economy and ecosystem.

Discover the most sought-after river fish and why they capture the attention of anglers.

Discover the most sought-after river fish, why they're so prized, and the best places to fish them. Learn about the star species of the moment!

White Spot in Fish: Causes, Symptoms, Treatment, and Prevention

Learn what white spot disease is in fish, its causes, symptoms, effective treatment, and how to prevent this disease in your aquarium.

Caribbean spider crab, saltwater invertebrates

Invertebrates in the Aquarium: Types, Care, and Benefits

Discover the best invertebrates for aquariums, their benefits, essential care, and compatibility with fish. Here's everything you need to know.

Complete Guide to Flower Horn Fish: Care and Characteristics

Find out how to care for the Flower Horn Fish: feeding, ideal aquarium and tips for breeding. Everything you need to know here.

Fish Reproduction: Types and Strategies for Survival

Discover how fish reproduce: oviparous, viviparous and ovoviviparous. Learn about their strategies for the survival of their offspring.

Colorful and easy to care for tropical fish

Freshwater Tropical Fish: A Complete Guide to Their Care

Discover the most colorful and easy-to-care-for freshwater tropical fish. Complete guide with advice on species, compatibility and maintenance.

Old water lizard: characteristics, feeding and care in aquariums

Discover interesting facts about the water damselfly, its diet, habitat and how to care for it in aquariums to maintain ecological balance.

Blue surgeonfish care and characteristics

Blue surgeonfish: care, characteristics and life in the aquarium

Discover all about the blue surgeonfish, its care, feeding and ideal habitat in marine aquariums. Learn how to keep it healthy!

Care, characteristics and curiosities of the puffer fish

Discover the characteristics, behavior, and essential care of the puffer fish. Learn about its diet, habitat, and precautions you should take.

Characteristics and care of the Fantail fish

Discover everything about the Fantail fish: care, characteristics, colorations and compatibility in aquariums. Make it your favorite!

Mixing different classes de peces

Although it may not seem like it, mixing different species de peces It can be something dangerous. When in doubt, it is better to consult before doing so.

Complete Guide to Samurai Gourami Fish

Discover all about Samurai Gourami: care, feeding, habitat and reproduction. Learn how to keep these Asian gems in your aquarium.

All About the Freshwater Snail Neritina Natalensis

Discover everything about the Neritina Natalensis: care, feeding, habitat and how to keep it in aquariums. Ideal for removing algae and decorating your tank.

Everything you need to know about ghost shrimp and their care

Discover everything about ghost shrimp: care, ideal habitat, feeding and reproduction. Complete guide to keeping them in your aquarium.

Complete guide to the lemon Labidochromis and its care in the aquarium

Discover everything about the Labidochromis lemon: care, habitat, feeding and reproduction of this fascinating cichlid from Lake Malawi.

Homemade CO2 for Aquariums: Complete Guide and Alternatives

Discover how to generate homemade CO2 for aquariums easily, economically and safely. Optimize the growth of your aquatic plants and the well-being of your fish.

Boquichicos: the aquatic treasure of the Peruvian Amazon

Find out all about the smallmouth bass: characteristics, reproduction, habitats and care. Key to the biodiversity of the Amazon. Read more here!

Comprehensive care and characteristics of the knifefish

Discover everything about the fascinating knifefish: characteristics, care, feeding and recommendations for its maintenance in aquariums.

Shubunkin Fish: Characteristics, Care and Ideal Habitat

Discover all about Shubunkin fish: care, ideal habitat, characteristics and tips. A vibrant and easy-to-care-for species.

Botia Yoyo Fish: Characteristics and Complete Care Guide

Discover everything about Botia Yoyo: care, characteristics, feeding and habitat. A complete guide to keeping them in healthy aquariums.

Horseface Loach Fish: Everything You Need to Know

Discover the ideal care, habitat and diet for horseface loach fish. A fascinating species for community aquariums.

Everything you need to know about the Diamond Tetra: Care and Habitat

Discover how to care for the spectacular Diamond Tetra, its ideal habitat and diet to maintain its vibrant coloration in well-designed aquariums.

Care and characteristics of the Pearl Gourami: the jewel of the aquarium

Discover how to care for pearl gouramis, their characteristics, feeding and aquarium requirements. Ideal for beginners and experts.

How to Create the Perfect Aquarium for Your Betta Fish

Discover how to create the ideal environment for your Betta fish. Learn about tank size, temperature, decor and essential care.

Essential Care for Coldwater Fish in Summer

Find out how to protect your coldwater fish in summer with essential tips to keep their aquarium cool and healthy.

Causes and symptoms of stress in fish: a complete guide

Discover the symptoms of stress in fish, their causes and how to prevent health problems in your aquarium. Complete guide to ensure their well-being.

Complete Guide: Types of Aquarium Filters and Their Function

Discover the types of aquarium filters, their functions and benefits. Learn how to choose the right one and how to maintain it for an optimal environment.

building a saltwater aquarium step by step

Complete guide to managing water hardness and density in aquariums

Discover how to manage water hardness and density in aquariums to maintain a healthy environment for your fish. Learn all about it here!

Detailed tips to prolong the life of the fish in your aquarium

Learn how to care for your aquarium and prolong the life of your fish with key tips on plants, lighting, feeding and water quality.

All about comet fish: characteristics, care and feeding

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Complete guide to caring for bubble fish in aquariums

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Complete Guide to Platy Fish: Characteristics and Breeding

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Aquarium bottom stones: functions and care

Discover how to choose stones for the bottom of your aquarium. Learn about their benefits, types and care for a healthy and decorative ecosystem.

Complete Guide to Caring for Flame Angelfish

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Care and secrets of the red phantom tetra

Discover how to care for the Red Phantom Tetra. Feeding, compatibility and details to keep it healthy and happy in your aquarium.

Everything you need to know about caring for Penguin Tetra Fish

Discover how to care for Penguin Tetras, their feeding, behaviour and aquarium requirements. Ideal for community aquariums.

The Importance of Aquarium Cycling: How to Maintain a Healthy Aquatic Ecosystem

Discover how cycling your aquarium is essential to maintaining clean, toxin-free water. Learn how to do it effectively to ensure the health of your fish.

The surprising personalities of fish: How do they adapt and change?

Fish have personalities and their behavior can change depending on temperature and stress. Find out how environmental factors influence your fish.

Bicolor Labeo Fish: Care, Habitat and Diet for Optimal Maintenance

Discover how to care for Labeo Bicolor, a territorial red-tailed fish, in aquariums. Complete guide on diet, habitat and reproduction.

Complete guide to the care and reproduction of the bluegill

Discover how to care for and breed bluegill with these practical tips. A complete guide for aquarists.

Advantages of having fish as pets: tranquility and low maintenance

Discover all the advantages of having fish as pets: calm, easy to care for and low maintenance costs.

Gambusia: Characteristics, Care and Everything About the Mosquito Fish

Discover everything about Gambusia: care, characteristics, feeding and how to integrate it into your aquarium. Ideal for controlling mosquito pests!

Complete Guide: Types, Shapes and Styles of Aquariums

Discover the different types of aquariums, their shapes and how to choose the best style for your needs and those of your fish. Detailed guide!

Elephant Fish: Characteristics and Care in Aquariums

Discover everything about the elephant fish: characteristics, care and feeding. Ideal for aquariums with peaceful species and large spaces.

transparent fish curiosities and species

Transparent Fish: Curiosities and Incredible Species

Discover the most amazing transparent fish, their curiosities and how to care for them in aquariums. Species such as the Barreleye Fish or the Crystal Catfish.

All about the kissing fish: characteristics, care and compatibility

Find out how to properly care for a kissing fish, its aquarium conditions, feeding, behavior and reproduction in detail. Learn more now.

All about the Flower Horn Fish: care, reproduction and feeding

Discover how to care for your Flower Horn Fish: feeding, compatibility, reproduction and tips to keep it healthy.

Complete Guide to Coldwater Fish Care

Discover how to care for coldwater fish by setting up an ideal aquarium with plants, proper filtration and feeding tips. Ensure their well-being!

How to Decorate Your Aquarium with Limestone: A Complete Guide

Discover how to use limestone to decorate your aquarium. Guide to use, preparation and benefits to maintain a healthy ecosystem.

Complete guide to setting up a tropical freshwater aquarium

Discover how to set up a tropical freshwater aquarium with our comprehensive guide. Tips, equipment and maintenance to keep your fish thriving.

Complete Guide to Types of Aquarium Heaters

Find out how to choose the right heater for your aquarium and maintain the ideal temperature for tropical fish and aquatic plants. Read our complete guide!

Aquatic Plants for Aquariums: Complete Guide for your Underwater Ecosystem

Discover how aquatic plants improve your aquarium. Learn about their care, types, and benefits to create a balanced ecosystem.

Aeromonas in Fish: Symptoms, Treatment and Prevention in Aquariums

Aeromonas salmonicida and hydrophila bacteria cause serious infections in freshwater fish. Learn how to prevent and treat these dangerous diseases.

What to do if the water is cloudy in the aquarium

How to prevent and fix cloudy water in your aquarium

Discover the causes of cloudy water in your aquarium and learn how to fix and prevent it with practical advice and specialized products, keep your aquarium spotless.

What water to use in aquariums

Aquariums are filled with water, but if it is from the tap, it can kill fish because of the chlorine it contains. What water can you use and how?

Small aquariums

We show you a comparison of the best small aquarium models of 2025, their characteristics, tips for their maintenance and decoration.

External filters for aquarium

Discover the aspects of external aquarium filters and which are the best depending on the need. What are the best models?

Aquarium oxygenator

Are you looking for an aquarium oxygenator and don't know which one to choose? Find out what it is, what it is for, how it is used and the best models for your aquarium.

Aquarium LED display

Looking for an aquarium LED display? We make a comparison of the best LED screens for aquariums and we tell you what you should know before buying

Substrate for aquariums

In this article we show you all the characteristics and types of aquarium substrate. Learn more about how to choose the one that best suits you.

Aquariums

Thinking of buying an aquarium? Discover the best models in our updated buying guide. What should you know before buying an aquarium?

Staurogyne Rubescens usually grows 5-6 centimeters

Aquarium plants

Here we show you some of the most outstanding plants for all types of aquariums and some that are more specific for certain species.

The best air pumps for aquariums

In this article we offer you a complete analysis of the best air pumps for aquariums. Learn to choose the one that best suits you.

The best aquariums

In this article we offer you a buying guide for the best aquariums and a comparison of some of the best-known models. Come in now!

Ideal temperature for freshwater tropical fish

List of the most common freshwater tropical fish and the temperature level care they must have to maintain good fish health.

Carp

Do you want to know more about carp fish? Enter here to see their characteristics, how long they live, how to care for them, their varieties and much more.