January 3rd, 2015 — 3:07pm
Despite its extensive natural distribution S. lilith is uncommon in the ornamental trade, where it is sometimes referred to as ‘one-spotted demon fish’ or ‘one spot eartheater’.
It can be distinguished from other members of the genus by possessing a single dark blotch on the flank and a prominent ocellus at the caudal-fin base. Among the named species it is most similar to S. daemon, but that species possesses two blotches on the flank.
Comment » | Category: Cichlids, Perciformes
Sturgeon Catfish
June 23rd, 2013 — 10:08pm
This species is relatively common in the aquarium hobby but is not easy to maintain and recommended only for experienced aquarists.
It can be told apart from all congeners by specimens larger than 60 mm SL possessing an extended pectoral-fin spine forming an extremely long filament that may be more than four times the length of the first branched pectoral-fin ray (vs. not possessing such a filament in other species of Lamontichthys).
Comment » | Category: Siluriformes, Suckermouth Armoured Catfishes
L146, L232, LDA030, Bola Pleco
June 23rd, 2013 — 1:26pm
This species has had several L-numbers assigned to it, with L146 collected from an unspecified locality in Colombia and L232 from the Río Putomayo/Içá.
It’s exported for the aquarium trade under a number of different generic names including Hemiancistrus, Sophiancistrus and Peckoltichthys.
Following Armbruster (2008) it can be to…
Comment » | Category: Siluriformes, Suckermouth Armoured Catfishes
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
March 6th, 2013 — 11:54am
This species is sometimes traded as C. sp. ‘red line’, ‘spotted tetra’ or as its congener C. nigrofasciata.
In the past it’s name was also widely applied to the fish now identified as C. callolepis and C. meinkeni, and this misidentification continues to an extent although the two are easily-distinguished by the fact that C. nattereri is the only one of the three possessing a dark lateral stripe on each side of the body.
Comment » | Category: Characiformes, Pencilfishes & ‘Splashing Tetras’
May 6th, 2012 — 6:44pm
This rich feeding ground is exploited until the sea water returns, at which point the catfishes begin to migrate upstream in massive numbers, moving up the Amazon and its tributaries. Sexually mature individuals are not normally recorded during these events so they’re thought related to feeding and dispersal rather than spawning. The fish are subject to intensive capture by commercial and artisanal fishing operations during this upstream movement.
Comment » | Category: Antennae Catfishes & relatives, Siluriformes
May 6th, 2012 — 2:28pm
This species can be told apart from the very similar-looking congener B. filamentosum by its smaller adult size (B. filamentosum can grow to almost 3 m in length), shorter maxillary barbels (never extending beyond base of adipose fin (vs. extending beyond base of adipose fin), moderately-forked with lobes of equal size (vs. deeply-forked caudal fin with upper lobe usually longer than the lower) and body col…
Comment » | Category: Antennae Catfishes & relatives, Siluriformes
Dourada
May 6th, 2012 — 1:05pm
Study of B. rousseauxii has revealed that sexually mature adults are found only in the western Amazon, with no mature individual ever recorded east of Manaus despite the intensive commercial fishery operating there. The total distance covered by some populations during migration from the delta was as much as 5500 km, making it the longest known in any freshwater fish species.
Comment » | Category: Antennae Catfishes & relatives, Siluriformes
Slobbering Catfish
May 4th, 2012 — 4:35pm
Found in a number of habitat-types, though rarely in smaller tributaries, generally preferring deeper, flowing channels through which it travels for considerable distances at certain times of year. Like other large, migratory pimelodids these movements are typically associated with nutrient-rich, white water drainages rather than nutrient-poor black waters.
Comment » | Category: Antennae Catfishes & relatives, Siluriformes
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
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