It is hard to tell in that pic. How big is he, the filaments on the end of the pectoral fins are actually quite short on the mombasa. The mombasa also has a red tear mark across the eyes and red dots on the pectoral fins. At the base of the tail on the mombasa the markings look sort of like an inverted Y. From what I can tell it does appear to be a mombasa.
To expand on more differences, the antennata's eyes, tear mark, and dots on the pectoral fins are black. Mombasa's eyes are blue. The filaments on the end of the pectoral fins on the antennata are long, longer than length of the pectoral fins themselves. In contrast the filaments on the mombasa are shorter than the length of the pectoral fins. these are just what I've seen and doesn't mean they are absolute.