Best Fish for Community Tank

What Makes a Great Community Tank Fish?

A community tank houses multiple species of fish living peacefully together. The best community fish are peaceful, compatible in water parameter requirements, similar in size, and non-aggressive. Building a harmonious community tank is one of the most rewarding aspects of the fishkeeping hobby.

Top Fish for a Community Tank

1. Neon Tetras

The quintessential community fish. Neon tetras are peaceful, stunning, and compatible with virtually every other community species. Keep in schools of 8–10 for the best display. They prefer soft, slightly acidic water (pH 6.0–7.0) and temperatures of 72–80°F.

2. Guppies

Hardy, colorful, and endlessly varied, guppies are a staple of community tanks. They're compatible with tetras, platies, corydoras, and most peaceful species. Feed TetraMin Tropical Flakes as a daily staple. Avoid keeping with fin-nipping species.

3. Platies

Peaceful, adaptable, and available in dozens of color varieties. Platies are compatible with guppies, tetras, mollies, and corydoras. They prefer slightly hard, neutral water and are very forgiving of minor parameter fluctuations.

4. Corydoras Catfish

No community tank is complete without corydoras. These peaceful bottom dwellers clean up leftover food, are completely non-aggressive, and are fascinating to watch. Keep in groups of 6+. Compatible with virtually every peaceful species.

5. Mollies

Mollies are peaceful, active livebearers that add size and variety to community tanks. They prefer slightly alkaline, hard water and do well with guppies, platies, and tetras.

6. Harlequin Rasboras

Beautiful schooling fish with a distinctive black triangle marking. Harlequin rasboras are peaceful, hardy, and compatible with most community species. Keep in schools of 8–10.

7. Dwarf Gourami

A stunning centerpiece fish for community tanks. Dwarf gouramis are peaceful, colorful, and compatible with tetras, rasboras, and corydoras. Keep one male per tank unless the tank is large.

8. Bristlenose Pleco

An excellent algae eater for community tanks. Bristlenose plecos stay small (4–5 inches), are completely peaceful, and help keep the glass and decorations clean.

Fish to Avoid in Community Tanks

• Tiger barbs — notorious fin nippers
• Male bettas — aggressive toward similar-looking fish
• Most cichlids — territorial and aggressive
• Goldfish — different temperature requirements

Setting Up a Community Tank

A 20–29 gallon tank is ideal for a beginner community setup. Use the Aqueon Aquarium Starter Kit for an all-in-one solution. Test water weekly with the Varify 17-in-1 Water Test Kit and do 25% water changes weekly with the Luigi's Gravel Vacuum.

Final Thoughts

A well-planned community tank is one of the most beautiful displays in the hobby. Choose compatible species, provide adequate space, and maintain consistent water quality — your community will thrive for years.