Piraya
March 13th, 2012 — 1:18pm
Following Fink (1993), P. piraya can be distinguished from congeners by the following combination of characters: adipose fin with rays in larger specimens (vs. always without rays in other Pygocentrus species); branched dorsal-fin rays 15-18, usually 16 (vs. 14-18, usually 15); usually 7 neural spines anterior to first pterygiophore (vs. usually 6); vertebrae 36-39, usually 38 (vs. 35-38, usually 36). It can also be identified by colour pattern since it possesses distinctive bright yellow-orange pigmentation on the lower jaw, opercle and lateral body in life.
Comment » | Category: Characiformes, Piranhas & Pacus
Trichopsis vittata (CUVIER, IN CUVIER & VALENCIENNES, 1831)
Croaking gourami
March 13th, 2012 — 1:18pm
The common name is derived from the ability of genus members to produce audible sounds via a specialised pectoral mechanism which is unique within the family Osphronemidae. The structure comprises modified pectoral-fin tendons and muscles which are stretched and plucked by basal elevations of two fin rays in a similar way to guitar strings via rapid beating of the fins. The pectoral-fins beat alternately, each able to generate short or long bursts of sound. These sounds are produced by both sexes, predom…
5 comments » | Category: Labyrinth Fishes, Perciformes
Sparkling Gourami
March 13th, 2012 — 1:18pm
It can be distinguished from congeners by its small adult size and presence of a single solid dark midlateral stripe on the body, above which is a series of dark blotches forming a second stripe. In the similar but larger, T. schalleri the upper stripe is more variable depending on the mood of the fish, sometimes fading entirely.
16 comments » | Category: Labyrinth Fishes, Perciformes
Brown Spike-tailed Paradise Fish
March 13th, 2012 — 1:18pm
Engmann (1909) mentions that the type series was collected from ‘Malakka’ but this is considered an error which probably should have read ‘Kerala’ since this species is known only from coastal drainages of the Western Ghats mountains in southern Kerala state, India.
Comment » | Category: Labyrinth Fishes, Perciformes
Deissner's Liquorice Gourami
March 13th, 2012 — 1:18pm
P. deissneri was the only recognised member of the genus for almost a century following its description in 1859.
As a result its name has and continues to be widely misapplied in both aquarium and ichthyological literature although it’s probably always been very rare in the hobby, while a number of fishes previously identified under the name from other pa…
27 comments » | Category: Labyrinth Fishes, Perciformes
Ornate Paradisefish
March 13th, 2012 — 1:18pm
This species is also referred to as ‘Kretser’s paradisefish’ and ‘spotted gourami’.
There exist three colour forms, two of which exhibit a greater degree of reddish or violet pigmentation in the fins, respectively. The third is more bluish and was described as M. kretseri minor by Deraniyagala (1958).
1 comment » | Category: Labyrinth Fishes, Perciformes
Black Paradise Fish
March 13th, 2012 — 1:18pm
M. spechti is also sometimes referred to as M. concolor, particularly in older literature. A dispute regarding conservation of that name was resolved by the ICZN in 2006, however, since M. concolor Ahl, 1937 is a junior primary homonym of M. concolor Schreitmüller, 1936 and thus permanently invalid.
Comment » | Category: Labyrinth Fishes, Perciformes
Roundtail Paradise Fish
March 13th, 2012 — 1:18pm
M. ocellatus can be distinguished from congeners by the following combination of characters: caudal-fin rounded; eye stripe not connecting spot on posterior projection of opercle with eye; dorsal-fin rays filamentous posterior to a vertical through the posterior anal-fin rays in adults; 16-19 spinous dorsal-fin rays; 6-13 rakers on ceratobranchial of first gill arch; posterior tip or margin of body scales not darker than scales.
1 comment » | Category: Labyrinth Fishes, Perciformes
Paradise Fish
March 13th, 2012 — 1:18pm
M. opercularis is a classic aquarium fish, having been introduced to the hobby by a French soldier named Gerault in 1869. Of the initial 100 specimens shipped, 22 survived and were successfully bred later that same year by another Frenchman, the Parisian Pierre Carbonnier. This gives the species the distinction of being one of the very first ornamental fish imported to Europe. It is also known as ‘Chinese fighting fish’, ‘paradise gourami’, and ‘blue paradise fish’.
4 comments » | Category: Labyrinth Fishes, Perciformes
Badis
March 13th, 2012 — 1:18pm
This species is sometimes sold under the trade name of 'chameleon fish' due to its ability to rapidly change colour, especially when breeding or stressed. It was originally described as Labrus badis by Hamilton but Bleeker reclassified it as Badis buchanani in 1854; he had adopted the species name 'badis' as the new name for the genus and wished to avoid using a tautonym. At that time the use of tautonyms was avoided in zoological taxonomy but is now permissible under ICZN ru…
3 comments » | Category: Perciformes, The Rest
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Major Changes in New World Cichlid Taxonomy
Reclassification of Genera: Several genera have been reclassified or merged. For example, the genus Cichlasoma has been split into multiple genera, an...
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Aphyosemion rectogoense
Many thanks cyprin, the image has now been removed.
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