Species
Care and disease, by species
The same problem often needs a different approach depending on the fish. These pages cover what's specific to your species — sensitivities, safe treatments and care quirks — starting with the fish people ask about most.
Betta Fish Ich: Spotting and Treating White Spot in Bettas
Ich in bettas — why it happens, how to treat white spot safely, and the dosing and heat cautions specific to bettas. Husbandry-first.
Read →Betta Fish New Tank Syndrome: Signs and How to Fix It
A betta lying on the bottom or clamping its fins in a new tank? Test ammonia and nitrite, change water, feed lightly — here's the full betta-specific fix.
Read →Betta Fish Velvet: Signs, Look-Alikes and What to Do
Velvet on a betta shows as fine gold or rust dust, clamped fins and flashing. How to confirm it, why the heater matters, and a husbandry-first plan.
Read →White Spots on Goldfish: Ich, Breeding Stars, and How to Treat
White spots on a goldfish are usually ich — or harmless breeding stars on a male. How to tell them apart, and how to treat ich the coldwater-safe way.
Read →