My LFS has some fish that are listed as 'Algae Eating Sharks' that look similar to SAEs. Does anyone know if this is a different name that is sometimes used, or if it is something different?
Some of the fish over in that particular branch of the Cyprinid family are sometimes called Sharkminnows. Fish like the Red-Tailed Shark and the Bala Shark are relatives of the Siamese Algae-Eater (SAE), who is also called the Siamese Flying Fox in a lot of places. Its also easy to confuse the SAE with the False Siamese and the Flying Fox.
For true SAEs:
1) the fins are clear 2) the black stripe extends through the tail and has a jagged edge 3) the scales on its back have dark edges 4) there is either no or an indistinct stripe above the black line.
IME when they are freaked out in a fishstore they get paler so that 3 & 4 can be unreliable: the fish gets too pale to see the edging and whatever faint stripe there is gets more pronounced as they get pale.