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Frants Lehmann (1 Stamp) Jean-Francois Helias (4)

Description: Mainly due to the presence of only 12 anal gland rays and differing due to other body proportions. Body elongated, belly flattened in the front half. Head strongly depressed. Body height 5 times in the total length without tail and almost 8 times with the caudal fin (without the lengthening of the upper lobe). The greatest height of the head is almost always contained in the distant tip of the nose and the end of the occipital processer Length of the head sometimes in the length of the body without the caudal filaments. Eyes very small, elongated; their diameter amounts to the entire length of the head, they lie exactly in the middle between the front and rear end of the head (with the occipital process distance between the two eyes about 1/16th diameter of the eye. Head bony above, in the middle somewhat sunk in the occipital process a little over the back of the the end of the gill protrudes, but not as far as the basal plate in front of the dorsal, twice as long as the width of its base. Muzzle depressed, rounded in front. Upper jaw protruding significantly above the lower in both jaws numerous, multi-row and of different sizes. Front nostril open, deadly, back covered by a flap-like skin, which forms the base of the very short nasal barbel. The latter has the rings of the smaller eye diameter, maxillary barbel stiff, very broad at the base, successively narrowed towards the end. Spines of the dorsal fin are strong and finely serrated, smooth at the back, lengthened upwards into a filament. Aquarium Care: This really is a fish destined to live a solitary life due to the fact that it would eat just about any other occupant that it could fit inside its mouth. When keeping the Devil Catfish it is essential to provide the fish with oxygen-rich water due to the fact that these fish are from highland streams. I have personally found it essential (Ralph. 2002) to provide good filtration and water movement in order to keep this fish in optimum condition. Regular 25% water changes are also appreciated by this catfish, and I always carry these changes out weekly and certainly no longer than fortnightly. Diet: As its common name suggests this truly is a demon amongst the fish world, requiring meaty foods at all times. In the wild this fish would predate upon smaller fishes, but in an aquarium it can be persuaded to feed upon cockles, mussels, whole prawns, dead fish and earthworms. It is also documented that this catfish when kept with fish bigger than itself, that it would eat their scales. Note: B. lica was a synonym of Bagarius yarrelli (Sykes 1839) which in itself is now a synonym of B. bagarius (2021). Still appearing on most online sources as B. yarrelli. Remarks: There are now five Bagarius species described. The "Devil Catfish" Bagarius bagarius from the Indian subcontinent. The "Dwarf Goonch" B. vegrandis is found in Chao Phraya and the Mekong. The "Flat head Goonch" B. Suchus is found in Chao Phraya and the Mekong. The Giant B. lica is found in every basin except Salween. B. rutilis from Vietnam, and the undescribed species B. sp. salween which is only found in Salween. B. yarrelli is now a synonym of Bagarius bagarius.

Devil Catfish

None

Sisoridae

Asia: Southeast Asia.

150.0cm. (5ft 0ins)

18-25°c (64-77°f.)

6.0-7.2.

Neue Fische aus Sumatra, Volz, 1903. Zoologischer Anzeiger.
www.biodiversitylibrary.org/