Amazon Puffer

Colomesus asellus

Minimum Tank Size

40–55 gal

Temperature

74–82°F

PH

6.0–8.0

Adult Size

3–5 in

Temperament 

Active; less territorial than many puffers but can nip fins

Care Difficulty

Advanced

Diet & Feeding

Carnivore; crunchy invertebrate foods including snails are important for tooth wear.

Care Instructions

Monitor continuously growing teeth and provide hard-shelled foods; maintain pristine water.

Flow & Filtration

Strong filtration, high oxygenation and current for active swimming.

Planted Tank Suitability

Good with open swimming areas.

Tank Mate Compatibility

Good Tank Mates
  • Other Amazon Puffers in Large Setups

Use Caution 
  • Fast Robust Fish

Avoid
  • Long-finned Fish
  • Shrimp
  • Snails as Pets

Compatibility Notes

Community keeping is risky because fin-nipping can occur; species-focused setups are safer.

Breeding Notes

Home breeding is rare.