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Nematabramis alestes (SEALE & BEAN, 1907)

November 12th, 2014 — 7:03pm

N. alestes is the only member of the genus in which the barbels are shorter than the head, with additional diagnostic characters as follows: 8-9 branched dorsal-fin rays; 12-14 branched anal-fin rays; 22-23 predorsal scales; body with a pronounced ventral keel.

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Cyclocheilichthys armatus (VALENCIENNES, 1842)

September 30th, 2014 — 5:21pm

It can be distinguished from congeners by possessing one or two pairs of barbels, a black blotch at the base of the caudal-fin, and rows of dark spots along the lateral scale rows.

Members of Cyclocheilichthys are characterised by possessing a serrated dorsal fin spine, 9 branched pelvic fin rays, a conical snout, small, subterminal…

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Ctenopharyngodon idella (VALENCIENNES, 1844)

Grass Carp

September 30th, 2014 — 12:57pm

Despite being a wholly unsuitable aquarium subject, C. idella is often traded as such, with an albino form having been developed specifically for the ornamental market.

Individuals which have outgrown their aquarium or pond should never be released into natural waters, either, since this species has proven capable of causing serious environmental damage under a wide range of climatic conditions.

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Channa maculata (LACEP√ąDE, 1801)

Blotched Snakehead

January 1st, 2014 — 4:15pm

This species is frequently confused with C. argus but can be distinguished by the following characters: dorsal-fin rays 38-45 (vs. 47-50 in C. argus); anal fin rays 26-29 (vs. 31-36); lateral line scales 50-56 (vs. 60-66); 2-3 rounded blotches on caudal peduncle (vs. no blotches on caudal peduncle).

It is widely-distributed in Pacific coastal drainages of southeastern China (e.g. the Yangtze, Minjiang, Hangjiang River, and Pearl (Nanjiu…

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Brachygobius aggregatus HERRE, 1940

Schooling Bumblebee Goby

November 12th, 2012 — 12:06pm

Though this species appears on ornamental trade lists quite often the name appears to be routinely misapplied to other species, particularly B. doriae.

It can be diagnosed as follows: <30 lateral scales; two black body bands reaching ventral midline posterior to anal-fin; band above anal-fin als...

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Butis amboinensis (BLEEKER, 1853)

Olive Flathead Gudgeon

September 26th, 2012 — 2:04pm

This species is not traded for aquaria but is occasionally exported as bycatch among shipments of other species. It differs from congeners in that the outermost row of teeth are not enlarged plus the interorbital space and cheek below eye are not scaled.

Butis spp. are largely nocturnal ambush predators with cryptic…

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Stiphodon surrufus WATSON & KOTTELAT, 1995

September 21st, 2012 — 8:41am

As with all members of the genus sexual dimorphism is pronounced. Males are brightly-coloured, with a reddish-orange stripe extending posteriorly from the pectoral-fin, with the posterior portion of the body entirely suffused with red. A darkish band extends from behind the eye to the edge of the opercle, and the basal third of the caudal-fin is reddish-orange.

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Sicyopus zosterophorus (BLEEKER, 1856)

September 18th, 2012 — 12:29pm

Type locality is given as ‘Boleling, northern Bali, Indonesia’ which appears to correspond to modern-day Buleleng, but this species is currently understood to have a patchy but wide distribution with a range stretching westwards from the Marquesas Islands (French Polynesia), throughout much of Vanuatu, New Caledonia, the Solomon Islands, Papua New Guinea, Palau, Fiji, Indonesia, the Philippines, Japan, Taiwan, and most recently, southern mainland China…

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Sicyopus cebuensis CHEN & SHAO, 1998

September 18th, 2012 — 10:15am

This species is not in the aquarium trade though is maintained by a few private collectors. It can be distinguished from all other members of the genus by the following combination of characters: first dorsal-fin withfirst dorsal-fin elongate in males; anterior portion of body with loosely-arranged ctenoid scales; head, entire nape to first dorsal-fin base, pectoral base, and belly naked; male colour pattern comprising creamy-yellow anterior portion of body with dark blotch at midbody and bright orange/red in postero…

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Barbodes binotatus (VALENCIENNES, 1842)

Spotted Barb

July 11th, 2012 — 12:58pm

This species is so ubiquitous across its natural range that it’s often referred to simply as ‘common barb’. Basic adult colour pattern consists of a small, dark spot at the base of the dorsal-fin origin and another on the caudal peduncle but overall appearance varies somewhat depending on origin, with the anterior dark spot enlarged ventrally forming a bar or posterior spot extending into the caudal-fin, for example. The spots may also appear darker or lighter in some individuals.

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