T. macrostoma is an ambush predator in nature, lurking behind rocks and in crevices as it stalks its prey. It is rarely seen in the hobby and is usually quite expensive. Juveniles are easily confused with the similar T. nigriventer, but are easily distinguished when adult, as nigriventer does not develop the dark belly of macrostoma.

Interestingly, this species exhibits reverse countershading, as also seen in the common Upside-down catfish, Synodontis nigriventris. This means that unlike the…

Like others in the genus, Tropheus moorii is something of an enigma in the aquarium hobby, and despite it's popularity is not a good species for the beginner. There has been much arguement and discussion about how best to maintain it in the aquarium, and some of these debates still rage on. We have provided the generally accepted method of keeping the fish, but in reality what works for one aquarist may not for another. One aspect which is always true, is that water quality is of the utmost…

Like others in the genus, Tropheus duboisi is something of an enigma in the aquarium hobby and despite it's popularity, is not a good species for the beginner. There has been much arguement and discussion about how best to maintain it in the aquarium, and some of these debates still rage on. We have provided the generally accepted method of keeping the fish, but in reality what works for one aquarist may not for another. One aspect which is always true, is that water quality is of the utmos…

Members of the genus Batasio are characterised by the following combination of characters; laterally-compressed body shape; presence of large sensory pores on the head; a narrow mental region; a pair of prominent posterior processes on the anterior portion of the vomer; a transversely elongated, bar-like entopterygoid; close contact between the metapterygoid and quadrate.

The vernacular name ‘lancer’ is derived from the extended dorsal spine possessed by several members of the genus, which currently contains 7 species. Among them B. majusculus is most similar to B. macracanthus and B. vaillantii but can be told apart from both by possession of longer pectoral-fin spines (length 15.8 – 20.7 % SL vs. 11.5 – 16.2 %), from the former by possession of a larger adipose fi…

The vernacular name ‘lancer’ is derived from the extended dorsal spine possessed by several members of the genus, which currently contains 7 species. Among them B. macracanthus is most similar to B. majusculus and B. vaillantii but can be told apart from the former by possession of shorter pectoral spines (13.3 – 16.2% SL vs. 15.8 – 20.7%), shorter adipose fin (46.0 – 58.0% SL vs. 38.8 – 45.8%), less deep caudal peduncle (7.1 – 7.5% SL vs. 5.6-7.0%) and larger adult size. From B. vaillantii it di…

Confirmed localities include the Kabini, Bhadra and Moyar tributary systems where it was last collected in 1998, the 1980s and 1990-92, respectively.

The IUCN currently list it as Critically Endangered (possibly extinct).

This species is relatively common in the aquarium trade but has been widely misidentified as the congener H. nemurus which is native to Java and may never have been exported for ornamental purposes.

Hemibagrus has been divided into a number of putative species groups which may or may not rep…

Like others in the genus, Tropheus brichardi is something of an enigma in the aquarium hobby, and is not a good species for the beginner. There has been much arguement and discussion about how best to maintain it in the aquarium, and some of these debates still rage on. We have provided the generally accepted method of keeping the fish, but in reality what works for one aquarist may not for another. One aspect which is always true is that water quality is of the utmost importance in a Tropheus t…

This is one of two species sold with the common/trade name of "tinfoil barb", the other being the more widely-recognised B. schwanenfeldii. Despite this it appears that B. altus is just as widely available as B. schwanenfeldii and in many cases is seen on sale more regularly. Unfortunately both are usually offered at a small size (usually around 2 – 3"/5 – 7.5cm) with little to no information regarding the eventual size of the fish. Although B. altus is the …