What physical mechanism serves as a strong deterrent against predators or larger tank mates?

Answer

The ability to lock and flare sharp, venomous fin spines

The presence of sharp, locked pectoral and dorsal spines serves as a strong deterrent, making potential aggressors think twice before engaging the fish.

What physical mechanism serves as a strong deterrent against predators or larger tank mates?

#Videos

Native Fish Care: Yellow Bullhead - YouTube

behavioraggressionfishBullhead