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

Lookdown

BAD Fish

Scientific Name Selene vomer

Other Name(s) Threadfin Lookdown

Care Level

Family

Lookdown

BAD Fish
Lookdown-1

Reflective white to silver/blue body; extremely sloped foreheads; elongated mouths; compressed body. Though captive-bred Lookdowns as small as 1 inch are sometimes available, their maximum size at adulthood and x-large tank requirement makes them suitable only for public display aquariums.