Aquarium Fish Species Guide 2025
Fishkeeping ranges from simple betta bowls to complex reef tanks. Understanding species needs—water parameters, tank mates, and diet—is essential for healthy fish.
How to Choose the Right Fish
Tank Size
Bettas need 5+ gallons; goldfish need 20+ gallons each.
Freshwater vs Saltwater
Freshwater is easier; saltwater requires more equipment.
Compatibility
Research which species can live together peacefully.
Care Level
Some fish are hardy; others need precise water conditions.
🐠 Types & Categories
Tropical Freshwater
Guppies, Tetras, Angelfish
Colorful, warm water, community fish
Coldwater
Goldfish, White Cloud Minnow
No heater needed, hardy
Tropical Saltwater
Clownfish, Tang, Wrasse
Vibrant, more expensive
Bettas
Betta Splendens varieties
Beautiful fins, must be kept alone
Browse All 10 Fish Breeds
Click on any breed to learn about their personality, care needs, and health considerations.
Betta Fish
Betta fish, also known as Siamese Fighting Fish, are stunning freshwater fish known for their flowing fins and vibrant colors. Males must be kept alone.
Goldfish
Goldfish are one of the most popular pet fish, but they require more space and care than most people realize. With proper care, they can live over 20 years.
Guppy
Guppies are colorful, hardy freshwater fish perfect for beginners. They're livebearers, meaning they give birth to live young rather than laying eggs.
Neon Tetra
Neon Tetras are stunning, peaceful schooling fish recognized by their bright blue and red coloring. They should be kept in groups of 6 or more.
Angelfish
Angelfish are elegant freshwater cichlids with distinctive triangular shapes. They're semi-aggressive and need careful tank mate selection.
Clownfish
Clownfish, made famous by Finding Nemo, are colorful saltwater fish known for their symbiotic relationship with sea anemones. They require saltwater aquarium setups.
Oscar Fish
Oscars are large, intelligent cichlids known for their personality and recognition of their owners. They require large tanks (75+ gallons) and are messy eaters.
Corydoras Catfish
Corydoras are peaceful bottom-dwelling catfish that help clean the tank. They're social fish that should be kept in groups of 5 or more.
Molly Fish
Mollies are hardy, peaceful livebearers available in many colors. They're adaptable to various water conditions and great for beginners.
Platy Fish
Platies are colorful, hardy livebearers perfect for community tanks. They come in endless color combinations and are extremely easy to care for.
Frequently Asked Questions
What's the best fish for beginners?▼
How often should I clean my fish tank?▼
Can goldfish live in a bowl?▼
Need Help Choosing?
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