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Kryptopterus cryptopterus (BLEEKER, 1851)

Blue Sheatfish

March 13th, 2012 — 1:22pm

Known from the Malay Peninsula and Singapore plus Greater Sunda Islands of Sumatra, Borneo and Java in Indonesia with populati0ns from Thailand, Cambodia, Laos and Vietnam formerly considered as conspecific now referred to K. geminus (Ng, 2003).

Type locality is given as ‘Bandjarmassing’ which corresponds to a town now more commonly referred to as ‘Banjarmasin’ in South Kalimantan (Kalimantan Selatan) province, Indonesia (Borneo).

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Notopterus notopterus (PALLAS, 1769)

Bronze Featherback

March 13th, 2012 — 1:22pm

This species is also referred to as ‘Asian knifefish’ or ‘ghost knifefish’ in the aquarium trade in the aquarium trade but arguably has no place in the ornamental hobby given its adult size and specialised requirements.

It is sometimes confused with the African species Xenomystus nigri but is easily told apart by its larger adult size and presence (vs. absence) of a dorsal fin.

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Acrochordonichthys rugosus (BLEEKER, 1846)

Asian Banjo Catfish

March 13th, 2012 — 1:21pm

This is the most commonly-encountered representative of the genus in the aquatic trade though is by no means common. As in other members of the genus body colouration is highly variable, even among individuals collected from a single locality, although a few useful regularities have been observed which can be used to distinguish certain species. This is thought related to the fact that Acrochordonichthys spp. periodically shed their skins and appear paler post-moulting.

A. rugosus lends its …

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Hemibagrus wyckii (BLEEKER, 1858)

Crystal-eyed Catfish

March 13th, 2012 — 1:21pm

Aggressively territorial and incompatible with other fishes in all but the largest public installations and even then may attack its tankmates.

It’s also one of few freshwater fishes that appear unafraid of humans meaning care must be exercised when performing maintenance.

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Channa gachua (HAMILTON, 1822)

Dwarf Snakehead

March 13th, 2012 — 1:18pm

Generally considered to have an enormous natural range extending from Iran to Taiwan and Bali, with records existing from Iran, Iraq, Afghanistan, Pakistan, Nepal, India, Sri Lanka, Bangladesh, Bhutan, China, Myanmar, Thailand, Laos, Cambodia, Vietnam, Malaysia, Indonesia, and Singapore.

However there exists significant evidence to suggest that C. gachua as currently understood represents a complex of similar-looking species, and a taxonomic review of the group is clearly required.

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Channa micropeltes (CUVIER, 1831)

Giant Snakehead

March 13th, 2012 — 1:18pm

C. micropeltes is also referred to as ‘Indonesian’, ‘red’, or ‘redline’ snakehead, the latter names in reference to the appearance of juveniles which often appear in the ornamental trade despite its unsuitability for home aquaria. It is somewhat hyperbolised in the media as a fearsome, invasive “monster” fish with a reputation for killing more fish than it can eat, and even the occasional human, although in reality…

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Belontia hasselti (CUVIER, 1831)

Java Combtail

March 13th, 2012 — 1:18pm

This species is also referred to by the vernacular name 'Malay combtail'. In terms of external characters it differs most obviously from its only congener, B. signata by its overal brownish grey (vs. reddish) body colouration and presence of a mosaic-type patterning in the unpaired fins (vs. absence).

The position of relatedness of the genus Belontia with respect to other anabantoids remains somewhat…

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Betta picta (VALENCIENNES, 1846)

Spotted Betta

March 13th, 2012 — 1:18pm

This species lends its name to the Betta picta complex of closely-related species, an assemblage of which members share the following combination of characters: unpaired fins rounded (anal fin sometimes pointed): I-III, 18-24 anal-fin rays; anal and caudal fins with dark distal margins, most pronounced in mature males; pre- and post-orbital stripes present; chin bar present; opercle with iridescent blue, green, or gold scales.

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