What characteristic often fades or disappears entirely on larger, older Opaleye specimens?
Answer
Yellowish-white spots below the dorsal fin
Younger fish often display prominent yellowish-white spots below the dorsal fin, but these markings tend to fade or vanish as the fish grows into an older, larger adult.

Related Questions
What is the documented maximum length for the Opaleye fish?What range represents the most common size range when Opaleye are encountered?Approximately how long are Opaleye fish when they reach sexual maturity and begin spawning?What is the maximum recorded weight listed for the Opaleye by the California Department of Fish and Wildlife?Where are Opaleye juveniles, often 1 or more inches long, commonly found?What characteristic often fades or disappears entirely on larger, older Opaleye specimens?What primary ecological role do Opaleye fill due to their diet which includes giant kelp and feather boa kelp?At approximately what age, corresponding to their size, do Opaleye fish typically start spawning?What unique adaptation is noted for Opaleye that helps in surviving short periods out of the water?What factor is mentioned as a possible reason for discrepancies in reported maximum weight figures for the species?Adult Opaleye are typically found in which depth range?