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
Red-Tailed Freshwater Barracuda, Redtail Barracuda Tetra, Redtail Cachorro, Zweitupfen-Hundssalmler (DE)
March 13th, 2012 — 1:22pm
The vernacular name of this fish is derived from its appearance and behaviour, rather than a genetic association with the marine barracuda, and it’s also sometimes referred to as ‘pike characin’ or ‘spotted cachorro’ with local vernacular names including ‘Grand dent-chien’ (French Guiana), ‘ Cachorrinho’ or ‘Ueua’ (Brazil).
Although most species of Acestrorhynchus appear superficially similar to one another most exhibit distinguishable external chara…
3 comments » | Category: Characiformes, 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
Polka Dot Lyre Tail Pleco, Elfenwels (DE)
March 13th, 2012 — 1:22pm
Despite its patent unsuitability as an aquarium subject attractively-coloured juvenile specimens of this species are traded in quite large numbers, although the scarcity of privately-maintained adults would suggest that most fail to reach their potential. The striking, spotted patterning also disappears as this species matures, and since it also becomes increasingly bellligerent with age it can only be recommended to owners of the largest private aquaria or tropical ponds. There exists an albino…
Comment » | Category: Siluriformes, Suckermouth Armoured Catfishes
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’
Dwarf Pencilfish
March 13th, 2012 — 1:22pm
There also exist a number of minor differences in colour pattern between populations. For example some Peruvian forms have yellow pigmentation on the body and fins, and those from Guyana and Suriname possess a short red stripe on vertical scale rows 6-9, above the central dark stripe on the body.
Rio Negro forms have a similar red stripe but overlapping the central dark stripe and extending along most of the flank, while a form from Colombia has an elongate red stripe which is broken in two beneath the dorsal-fi…
1 comment » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
Hockeystick Pencilfish
March 13th, 2012 — 1:22pm
This species has been referred to the genera Poecilobrycon and Nannobrycon in the past and in the aquarium hobby is also known as ‘rocket’, ‘brown’, ‘brown-tailed’, ‘diptail’, or ‘tubemouth’ pencilfish.It’s a popular aquarium fish and has an interesting oblique swimming-style, a behavioural trait shared only with N. unifasciatus among congeners.
In the original description the colour pattern is given by Steindachner as a brown lateral stripe exte…
Comment » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
Golden Pencilfish
March 13th, 2012 — 1:22pm
This is the type species of the genus, fairly ubiquitous in the aquarium trade, and represents an excellent choice for the newcomer to fishkeeping since it’s less demanding than most congeners. It’s sometimes referred to as ‘Beckford’s pencil fish’ or ‘brown pencilfish’.
Don’t worry if your fish look different when you switch on the aquarium lights after dark or in the morning as like most Nannostomus species it assumes a cryptic, vertically-barred colour pattern at ni…
2 comments » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
Sharphead Eartheater
March 13th, 2012 — 1:22pm
This species is relatively rare in the ornamental trade, where it is sometimes confused with its similarly-patterned congeners S. daemon and S. lilith. These three species all possess 1-3 dark blotches on the side of the body and a relatively large ocellus on the upper caudal-fin base, characters that immediately separate them from the remainder of the genus which lack blotches on the body and have a relatively small ocellus on the upper caudal-fin base.
Comment » | Category: Cichlids, Perciformes
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