Contact

Write to [email protected]. A person reads every message.

What helps most

A verdict that does not match what you see. Tell us the two species, the verdict on our page and what happened in your tank. If a care guide or a study says otherwise, send the link.

A wrong figure. Temperature, pH, size or tank size that looks off for a species. A source helps us fix it faster.

A missing species. We started with the fish people ask about most and add more over time.

Everything else

Reusing the data, partnerships or questions about how the site works: same address.