Brachypterois serrulata has 13 spines and 10 or 11 soft rays in its dorsal fin while the anal fin contains 3 spines and 5 or 6 soft rays.
In Brachypterois serrulata, the dorsal fin features 13 spines and either 10 or 11 soft rays, whereas the anal fin has 3 spines and either 5 or 6 soft rays.