Thanks Jack I hope your right, I like the idea of 3 females :clap:right pic, top left male, top left female.
bottom, both females i think.
It helps but its in no way an imediate identification and wouldnt alter my thoughts if it where not the case.The 3 biggest do seem to favour the caves whilst the smallest hangs around under a sponge filter. Does that tend to point to at least 3 males as well?