Bas Pels wrote:if I remember correctly, Abalios never hasd this smal a dot on the side, so it must be G altifrons
G altifrons also grows significantly larger
does have a midlateral spot, the name abalios
just refers to the lack of preopercular marks. The mid-lateral spot of abalios
, though, is larger and differently shaped. The colour pattern in the fins is another difference: most notably the round, small spots in the caudal fin are typical to altifrons
whereas the spots in abalios
are wider even in a small fish and then tend to slowly change into stripes as they grow up.
The overall colour is also another indicator between the two species – while altifrons
of course exhibits quite a bit of variation depending on the population, G. abalios
is never that heavily blue/green and instead the longitudinal stripes on their flanks are yellow/orange/red combined with lighter tones of green and blue.
The number and appearance of lateral bars on the flanks is yet another difference, but that does not help much in this case.