The difference between a flying fox and a Siamese algae eater lies in their appearance. Here’s how you can tell them apart:
- Mouth structure – A flying fox has a small fleshy flap at the corner of its mouth, while a Siamese algae eater doesn’t.
- Black stripes – A flying fox’s stripes appear clean and straight, while a Siamese algae eater’s stripes appear more jagged and less uniform.
- Fin color – A flying fox’s fins tend to be yellowish or orange with black stripes, while a Siamese algae eater’s fins are clear.
- Dorsal fin shape – Both have notches on their dorsal fins, but the notch is deeper on a flying fox.
Because these two fish look almost identical, it can be difficult for a novice to distinguish them. Aside from those four differences, both species have similar appearances and behaviors.