Differences between Siamese Algae Eaters and Flying Foxes

If you’ve ever tried to deal with black brush algae you’ve probably heard of the siamese algae eater, one of the few fish that will happily eat BBA. The problem is that there are a few species that look very similar to a siamese algae eater that often get confused with each other and often mislabelled and sold as the wrong specie. After spending a great deal of time online to educate myself on the differences I wanted to compile an article to quickly and clearly help people tell the difference.

Siamese Algae Eater (Crossocheilus langei)

true_siamese_algae_eater_bw true_siamese_algae_eater

Alse referred to as True siamese algae eaters (SAE), Crossocheilus siamensis, Siamese flying fox (using this name should be avoided to prevent confusion), Epalzeorhynchos siamensis.

Key differences:

  • The black stripe extends to the end of the tail instead of cutting off at the end of the body
  • Has 2 forward facing barbels next to the mouth
  • Fins are primarily clear and do not have much colouration


False Siamese Algae Eater (Epalzeorhynchus sp.)


Also known as the Thailand Flying Fox, False Siamensis

Key differences:

  • Black stripe stops at the end of the body
  • No visible barbels
  • There is a gold coloured stripe above the black lateral stripe
  • Fins have a distinctive yellow tint.


Flying Fox (Epalzeorhynchos kalopterum)


Key differences:

  • Black stripe extends to the end of the tail
  • Has 2 forward facing barbels plus another 2 on the side
  • Fins have a Yellow-red tint

Angelfish Breeding Update

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So my experience with angelfish breeding has been less than ideal. I’ve had 5 spawns now in total but am still yet to rear any fry successfully.

My first three spawns were in my large community tank of which I wasn’t expecting any great results. The spawn generally lasted the day but was overrun at night by either my ghost knife, pictus or peppermint plecos. I then moved the pair into one of my small breeding tanks originally purposed for my plecos. After a few days the pair spawned on the breeding cone in the tank. Unfortunately the pair didn’t fan the eggs enough and fungus took over and spoiled them. Next spawn was only a few days later, much smaller and after I noticed the spawn i found the female attacking the male. After separating the two to stop my male getting killed I concluded that the issue was that the breeding tank was simply too small.

I’ve now moved the pair back to the community tank and they appear to be friendly again. The plan now is to let them spawn in the community tank and then extract the eggs and hand raise them in the breeding tank with an egg tumbler.