Not islanae. The fish with dot behind Gill plate is red tail falcatus. The others are heterolepis possibly. Falcirostris do have black stripe as juveniles, lose it as they grow. Falcirostris have a huge snout though. I see heterolepis bro, could be wrong.I don't know what to think at this point really lol. Any other species have stripes besides isalinae and nasutus??Only reason I don't believe these to be isalinae is because of the growth they have had within a month from 2inches to 4-5 inches now. Just seems quick for a fish that maxes out at 4-6 inches