Max Size: 15cm

True Flying Fox (Epalzeorhynchos kalopterus)

The True Flying Fox is a somewhat shy but stunning fish that is best kept as a single specimen in an aquarium.

These fish are somewhat aggressive to their own kind and other similar shaped fish such as the Rainbow and Red-Tailed Shark as well as Garra species, especially the very similar-looking False Siamese Algae Eater (Garra cambodgiensis).

While it is possible to keep more than one True Flying Fox In an aquarium, it comes with some risks. Due to their territorial temperament, there's a high possibility that these fish will fight unless they have a significant amount of space and hiding places.

The True Flying Fox is generally compatible with most other types of aquarium fish, including Loaches, Barbs, Danios, Tetras, and even very small Rasboras, making them excellent community aquarium members.

The True Flying Fox has an elongated body and a flat stomach. The lower part of its body has a yellowish-white hue, and its dorsal region has a colouration ranging from olive to dark brown. A brownish-black stripe runs from its mouth to the caudal fin and on top of that is a gold-coloured stripe. The True Flying Fox\'s have a reddish iris, and its anal, dorsal and ventral fins consist of a translucent front with a thick black band along the edge.

Tank Mates for the True Flying Fox

1 ideal tank mate ideas for the True Flying Fox include:

Silver Flying Fox(Crossocheilus reticulatus)
Quick Facts
Scientific NameEpalzeorhynchos kalopterus
Other NamesFlying Fox
Aquarium LevelBottom
DifficultyBeginner - Intermediate
Best kept asLoners
Lifespanup to 10 years
Water Parameters
Water TypeFreshwater
PH6.0 - 7.5
GH4 - 12
TDS36 - 215
68 - 79℉
20 - 26.1℃

Photos of the True Flying Fox

The True Flying Fox
Flying Fox
Flying Fox
Mature True Flying Fox
True Flying Fox
True Flying Fox
True Flying Fox
True Flying Fox
True Flying Fox
True Flying Fox
True Flying Fox
True Flying Fox


True Flying Fox (Epalzeorhynchos kalopterus) Freshwater Aquarium Fish Species Profile & Care Guide

Natural Habitat

True Flying foxes are native to the Thai Malay Peninsula, Java, Sumatra and Borneo in Indonesia in Southeast Asia. They inhabit fast-flowing rivers and streams and move into seasonally forested areas or floodplains during the wet season.

You can find them grazing on rocky or sandy substrates but have also frequently been seen underneath floating objects such as floating houses, boats and pockets of dense surface vegetation.

What to feed the True Flying Fox

The True Flying fox is primarily an algae eater; however, they will also readily accept high quality dried food such as flakes and granules and algae wafers.

If you want your fish to develop its best condition and colours, you should offer them regular meals of small frozen or live food such as bloodworm, tubifex or chopped white worms.

It would be most beneficial if you also included some vegetable matter into their diet in the form of Zucchini, cucumber, broccoli and lettuce.

How to sex the True Flying Fox

It is incredibly challenging to differentiate males from female True Flying Fox's, especially juveniles. However, sexually mature females are noticeably deeper-bodied than slimmer males.

How to breed the True Flying Fox

Unfortunately, there have been no reported cases of the True Flying Fox being bred in the home aquarium as far as we know. However, large quantities are farmed for the ornamental trade with the aid of hormones.

Other Sharks of interest

Bala Shark(Balantiocheilos Melanopterus)
Black Sharkminnow(Labeo chrysophekadion)
Chinese High Fin Banded Shark(Myxocyprinus Asiaticus)
Rainbow Shark(Epalzeorhynchos Frenatum)
Red Tailed Black Shark(Epalzeorhynchos bicolor)
Siamese Algae Eater(Crossocheilus oblongus)
View all Sharks
Date Added: 24/03/2021 - Updated: 19/01/2022 14:10:36