Cross' damsel

The Cross's damsel (Neoglyphidodon crossi) is a marine fish species distinguished by its dark body with a vivid electric blue stripe along the flank, originating from the Pacific Ocean, specifically around Indonesia and the Solomon Islands. Characterized by its striking coloration and a somewhat aggressive demeanor, it has a mixed reputation in the aquarium hobby, known among enthusiasts but not considered one of the most popular or commonly kept damselfish species.