Coral Red Pencilfish
March 13th, 2012 — 1:23pm
This species is traded under various other names including ‘red arc pencilfish’, ‘Peruvian red pencilfish’, ‘ruby red pencilfish’, ‘red pencilfish’, and Nannostomus cf. marginatus ‘red’.
It was initially described as a subspecies of N. marginatus but can be identified by the following combination of characters: pronounced sexual dimorphism with adult males exhibiting bright red pigmentation between the central…
Comment » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
Spotfin Hatchetfish
March 13th, 2012 — 1:23pm
T. stellatus is superficially similar to its only congener T. securis, but can immediately be identified by the presence (vs. absence) of a prominent dark spot in the dorsal-fin. It is sometimes traded as ‘platinum hatchetfish’.
The genus Thoracocharax was originally erected by Fowler in 1906 as a subgenus of Gasteropelecus, but was elevated to generic status by Weitzman (1960).
Comment » | Category: Characiformes, Hatchetfishes
Vampire Tetra
March 13th, 2012 — 1:23pm
This species may be referred to using a variety of names including ‘scomb’, ‘sabre tooth tetra’, ‘sabre tusk barracuda’, ‘dog tooth characin, ‘vampire fish’, ‘Cachorra’ or Pirandirá (the latter two names being used in Brazil where they’re also applied to congeners).
It’s regularly confused with the payara, H. armatus, though that species grows considerably larger, is pop…
3 comments » | Category: Characiformes, The Rest
Fairy Cory
March 13th, 2012 — 1:22pm
This species is sometimes confused any of several similar-looking fishes such as C. sychri or C. sp. C097.
While the former is a more elongate fish with a longer snout and quite easy to identify, C097 resembles C. atropersonatus more closely, despite being traded as C. sychri ‘longnose’. Its snout is longer than that of C. atropersonatus but shorter than that of C. sychri, and the dark spots on the body tend to be more well-defined and spaced out than in the other two.
Comment » | Category: Armoured Catfishes, Siluriformes
March 13th, 2012 — 1:22pm
Described from the Río Ampiyacu, a small tributary draining into the main Amazon channel in Loreto Department, northeastern Peru, with additional records from the Yavarí (Javari), Napo, Nanay, and lower Ucayali drainage basins.
All of these are Amazon tributaries, and C. ambiacus appears to occur in most or all affluents of the main Amazon channel between th…
Comment » | Category: Armoured Catfishes, Siluriformes
Bottlenose Catfish
March 13th, 2012 — 1:22pm
This species may also be seen on sale as 'Guyana slopehead catfish' 'dolphin catfish' or 'hammerhead catfish'. The attractive juvenile patterning is largely lost as the fish grow but this nevertheless remains an impressive predatory species for the larger aquarium.
The genus Ageneiosus was at one point classified in the family Ageneiosidae alongside the genus Tetranematichthys, but this was not accepted by all…
2 comments » | Category: Siluriformes, The Rest
Midnight Catfish
March 13th, 2012 — 1:22pm
This species is also known by the alternative vernacular name of ‘Zamora woodcat’, and is often misidentified as A. thoracatus. The latter is a valid species and very similar to A. coracoideus in that the coracoid bone is exposed ventrally and covered only by a thin layer of integument in both species. The two differ principally in the number of anal fin rays…
Comment » | Category: Siluriformes, The Rest
Amazon Puffer
March 13th, 2012 — 1:22pm
This species is also referred to as ‘South American puffer’, ‘SAP’, ‘Amazonian puffer’, ‘Peruvian puffer’, or ‘Brazilian puffer’ in the ornamental trade.
Within the genus Colomesus, C. asellus can be immediately identified by possessing a unique transverse row of dermal flaps across the chin which is absent in its congeners C. psittacus and C. tocantinensis.
1 comment » | Category: Tetraodontiformes
Three-lined Pencilfish
March 13th, 2012 — 1:22pm
Wild populations vary in colour pattern depending on origin, and some populations have previously been described as distinct species.
A form from Peru has a particularly silvery body colour, for example, while another, marketed as ‘super red’ possesses an unusually long red stripe on the body, extending much of the length of the dark central stripe. A population from around Boa Vista in the rio Branco system, Pará state, Brazil has an ocellus o…
2 comments » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
Saddle Cichlid, Grünglanzbuntbarsch (DE)
March 13th, 2012 — 1:21pm
This is the type species of the genus Aequidens and has the widest distribution of any member species. It exists in various colour forms depending on locality with variants from Ecuador and Peru being particularly sought after since they develop striking red (Ecuador) or orange (Peru) colouration on the lower part of the jaw, head and anterior portion of the belly whereas those from Brazil tend to have an overall grey/blue/green colouration, for example.
Despite its type status it's long…
Comment » | Category: Cichlids, Perciformes
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