The Good Fish / Bad Fish Tool
for Saltwater Aquariums,
Award-winning tool for creating ocean-friendly aquariums.

Three-Stripe Damselfish

BAD Fish

Scientific Name Dascyllus aruanus

Other Name(s) Whitetailed Damselfish; Humbug Damselfish; Humbug Dascyllus

Care Level


Three-Stripe Damselfish

BAD Fish

White with 3 black bars and a white tail which distinguishes it from the Four-Stripe Damselfish. Captive breeding successful at the experimental level only. Like other damselfishes listed here, the Three-Stripe Damselfish is also subjected to the cruel process of tank cycling. Despite the likelihood that many are captured with cyanide, Three-Stripe Damselfish are the are the #4 marine aquarium fish imported into the U.S.