Fish Species Care Guides
Care guides for popular aquarium fish and invertebrates: tank size, water parameters, tankmates, diet, and common mistakes. Pair each with our stocking and tank-size calculators.
Betta Fish Care
Tank size, heating, and the truth about bettas in bowls.
Read more →Goldfish Care
Why goldfish need far bigger tanks than most people think.
Read more →Guppy Care
Hardy, colorful, and prolific: a great beginner livebearer.
Read more →Neon Tetra Care
Schooling, tank size, and water parameters for neons.
Read more →Cardinal Tetra Care
The brighter, hardier cousin of the neon tetra.
Read more →Angelfish Care
Tank height, tankmates, and why pairs get territorial.
Read more →Molly Fish Care
Livebearer care, hard water needs, and brackish notes.
Read more →Platy Fish Care
Easygoing, colorful livebearers for community tanks.
Read more →Swordtail Care
Active livebearers that need room to swim.
Read more →Corydoras Catfish Care
Peaceful bottom-dwellers that must be kept in groups.
Read more →Bristlenose Pleco Care
The algae-eating pleco that stays a sensible size.
Read more →Dwarf Gourami Care
Colorful centerpiece fish for calm community tanks.
Read more →Pearl Gourami Care
A peaceful, elegant gourami for larger communities.
Read more →German Blue Ram Care
A stunning dwarf cichlid for warm, stable tanks.
Read more →Discus Care
The king of the aquarium: advanced, warm-water care.
Read more →Tiger Barb Care
Active schoolers that nip when kept in small groups.
Read more →Zebra Danio Care
Bulletproof, active fish ideal for new tanks.
Read more →Harlequin Rasbora Care
Peaceful, hardy schooling fish for community tanks.
Read more →Kuhli Loach Care
Shy, eel-like bottom-dwellers that love groups.
Read more →Cherry Shrimp Care
Beginner-friendly invertebrates and natural cleanup crew.
Read more →Amano Shrimp Care
The best algae-eating shrimp for planted tanks.
Read more →Mystery Snail Care
Big, peaceful snails that help clean the tank.
Read more →Nerite Snail Care
The top algae-eating snail that will not overrun your tank.
Read more →Oscar Fish Care
Big, intelligent cichlids that need a very large tank.
Read more →Axolotl Care
Cool-water aquatic salamanders with special needs.
Read more →Aquarium Setup & Maintenance Planner
9 printable worksheets to plan your stocking, track your water tests and cycle, and stay on a maintenance schedule.
Get the Planner for $39