Emerald 'Brochis'
June 18th, 2013 — 10:57pm
This species was formerly included in the genus Brochis alongside C. britskii and C. multiradiatus, and is sometimes referred to as ‘common brochis’. Juveniles have a mottled colour pattern and are sometimes traded as ‘hi-fin cory’ due to their enlarged dorsal-fin.
C. splendens can be told apart from other ex-Brochis species by possession of 10-12 dorsal-fin rays…
1 comment » | Category: Armoured Catfishes, Siluriformes
Giant Bumblebee Catfish
June 15th, 2013 — 2:06pm
Comment » | Category: Antennae Catfishes & relatives, Siluriformes
Blackwing Hatchetfish
May 13th, 2013 — 4:36pm
Gasteropelecids are commonly-referred to as ‘freshwater hatchetfishes’ due to their heavily-keeled body shape which has evolved in such a way due to possessing an enlarged, heavily-muscled pectoral girdle, and which resembles the shape of a hatchet head.
They are sometimes said to be capable of propelled flight above the water surface by beating their pectoral fins but in fact this is not the case and was disproven by Wiest (1995) who used…
Comment » | Category: Characiformes, Hatchetfishes
April 30th, 2013 — 4:19pm
C. carsevennensis has formerly been synonymised with C. arnoldi but was considered separate by Zarske (2011) using the following combination characters: absence (vs. presence) of a silvery-white to white patch in the centre of some of the flank scales in males, particularly in the lower half of the body; absence (vs. presence) of a horizontal dark body bar in nuptial males; absence (vs. presence) of thin black margins in the dorsal, ventral and anal fins; eggs deposited among submerged vegetation (vs. eg…
Comment » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
March 19th, 2013 — 11:09am
This species is largely unsuitable for the home aquarium given its eventual size and natural behaviour, and we know of only a handful of private aquarists with the facilities required to house it long-term.
Nonetheless juveniles and subadults are sometimes available in the trade although often misidentified as the congener B. maculata.
Comment » | Category: Characiformes, The Rest
March 19th, 2013 — 9:03am
Both species also possesses a broader dark midlateral stripe on the body which tends to be more well-defined in B. lateristriga than in B. maculata.
Colour pattern in B. maculata varies considerably with some specimens noticeably paler than others, for example, and the the broad midlateral stripe usually less intense in such individuals.
This does not app…
Comment » | Category: Characiformes, The Rest
Striped Pike 'Characin'
March 18th, 2013 — 4:54pm
Boulengerella differs from Ctenolucia, the only other genus currently contained in the family Ctenolucidae, by a series of derived features including possession of 87-124 (vs. 45-50) lateral line scales, presence of a strongly (vs. weakly) developed fleshy appendage at the tip of the snout and absence (vs. presence) of fleshy flaps on the lower jaw.
Within the order Characiformes the family Ctenoluciidae is also distinguished by a set o…
Comment » | Category: Characiformes, The Rest
March 18th, 2013 — 12:29pm
It’s known by various vernacular names including ‘Pirá-pacu’, ‘Pira-pucu’ or ‘Diente de cao’ (central Amazon), ‘Bicuda’ or ‘Uena’ (rio Tocantins), ‘Bicuda’ (rio Tapajós), ‘Aguejeta’ or ‘Picua’ (Venezuela), and ‘Moruwi’ or ‘Pirapoko’ (Guyana).
The entire dorsal-fin base is located anteriorly to a vertical through the anal-fin origin and this character distinguishes it from all other ctenolucids except B. lucius and B. xyrekes.
Comment » | Category: Characiformes, The Rest
March 13th, 2013 — 11:13pm
This species is rare in the aquarium trade but is arguably more suitable for the home aquarium than some of its better-known relatives given its adult size and relatively docile behaviour.
Other vernacular names include ‘Dientón’ (Peru), ‘Perrito’ (Ecuador), ‘Payara-chata’ or ‘Payarin’ (Venezuela) and ‘Icanga’, ‘Minguilista’ or ‘Peice-cachorro’ (Brazil), some of which are also applied to related species.
Comment » | Category: Characiformes, The Rest
March 13th, 2013 — 4:36pm
Vernacular names in Brazil include ‘Cachorra’ or ‘Pirandirá’, although these are also applied to congeners.
It can be told apart from all congeners by the following combination of characters: head and body silvery with dark dorsal surface; an elongate dark blotch posterior to the opercle; dorsal, caudal and anal-fin rays reddish to orange proximally with some individual variation in intensity and tonality; adipose fin dark, with diffuse black pigmentation.
Comment » | Category: Characiformes, The Rest
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