Will your fish get along?

A free A–F report card for your aquarium. Add your tank size and fish, and every clash is named with the reason: temperature, temperament, fin nipping, tank size, schooling and bioload.

Grade my tank →Free · optional $6.99 plan

• Grades your exact fish in your exact tank size
• Every problem named, with the reason
• 144 species, each checked against 2+ care sources
• A report card you can share or save

• See a sample Fix-My-Tank Plan›
• Browse the Species Ledger›