Epalzeorhynchos frenatum

(formerly Labeo frenatus)



    Although not seen as much as it close cousin the red tailed black shark, the red finned shark is a beauty in its own right. Given good conditions the fins will color up and rival any in the tank. It also has the benefit of not being quite as aggressive and can be placed with a wider range of tankmates.


Quick stats:

Listed tank sizes are the minimum
Size: Up to 6″ (15cm)
Tank: 36 inches, 30 gallon
Strata: Bottom-middle
PH: 6.5-7.5
Hardness: Soft to medium. dH range: 2-15
Temperature: 73°F to 79°F (23-26°C)


Order: Cypriniformes
Suborder: Cyprinoidei
Family: Cyprinidae
Genera: Epalzeorhynchus

Common name:


Red finned shark

    ,Rainbow shark, Labeo frenatus


    Southeast Asia, 1n the streams of Thailand.

General Body Form

    1. A large Dorsal fin, usually held upright with its outer back edge concave. Belly profile slightly curved and the back is very


    . Down-facing mouth, with two set of barbels. The body is slightly compressed and long. They can reach a length of about five inches, with the females larger than the males.


    1. Very similar to the more common

Epalzeorhynchus bicolor

    , the main difference is the Reddish-Orange to Red coloration is shown in all the fins, not just the dorsal If the fish is in good condition the rest of the body, including the rest of the fins is Velvet or jet Black. Specimens that are in poor health or not kept in the proper conditions will appear pale and washed out.

MaintenanceCompatibility: Do not keep with members of its own kind or any other kind of ‘shark’ unless there is plenty of space for both fish to establish territory and so they aren’t in constant sight of each other. This fish can also be somewhat aggressive to other fish, especially other fish that live in the bottom strata. May also nip fins, but doesn’t make it a habit like a tiger barb. Food: They need vegetable matter in their diet to grow properly. Everything is greedily taken by this fish. Feed algae sinking wafers, pellets, blood worms, brine shrimp, will also nibble zucchini and other greens.
Decoration: This fish loves caves. Provide at least 2 caves, each on opposite sides of the tank. They will sleep in their cave. A cave of wood or rocks will make the fish feel secure. If shelter is not provided they’ll take to any tight fitting secure place, including behind the heater, so provide a few caves to make them happy. Planted tanks also make this fish feel more secure, so a few plants are a plus ***CAUTION: will eat some plants, hungry or not*** Make sure the plants have relatively thick leaves, anubias or Java fern works well. The more secure the fish feels, the less aggression its likely to show.

Biotope:Clear and muddy waterways littered with wood and stones


    1. Breeding: Not recorded in the home aquarium.
    Breeding Difficulty: Expert – due to its intolerance of it’s species.


5/5 - (17 votes)


Please enter your comment!
Please enter your name here