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Satanoperca lilith KULLANDER & FERREIRA, 1988

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.

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Corydoras eques STEINDACHNER, 1876

May 10th, 2014 — 3:49pm

Although described as a member of Corydoras this species was later moved into the genus Osteogaster by Cope (1894), but this was later synonymised with Corydoras by Gosline (1940).

It is sometimes confused with C. venezuelanus, while two similar-looking, unidentified fishes from Peru have been assigned the codes CW007 and CW043, respectively.

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Lamontichthys filamentosus (LA MONTE, 1935)

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).

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Peckoltia bachi (BOULENGER, 1898)

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…

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Boulengerella maculata (VALENCIENNES, 1850)

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…

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Boulengerella cuvieri (SPIX & AGASSIZ, 1829)

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.

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Cynodon gibbus (AGASSIZ, 1829)

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.

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Axelrodia stigmatias (FOWLER, 1913)

March 8th, 2013 — 4:13pm

It’s most similar to A. riesei but can be told apart by its more-elongate body (depth 4-5 times, vs. 3.1-3.5 times, in SL), live body colour (silvery yellow, vs. red) and suborbital bone structure (almost complete, vs. reduced).

The third species, A. lindeae, is quite different posses…

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Trochilocharax ornatus ZARSKE, 2010

Hummingbird Tetra

March 7th, 2013 — 4:41pm

This species is not often available and is much sought after in the aquarium hobby where it’s been traded as ‘crystal rainbow tetra’ and ‘orange-tailed glass tetra’.

It’s also been referred to as a Heterocharax or Tyttocharax species in the past.

It’s currently the only member of its genus which is separated fr…

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Copella meinkeni ZARSKE & GÉRY, 2006

Spotted Splashing Tetra

March 6th, 2013 — 3:27pm

This species has been widely referred to as the congener C. nattereri in aquarium literature both prior to and post-publication of its official description in 2006.

The two can be told apart quite easily by the fact that C. nattereri possesses a dark lateral stripe while C. meinkeni does not.

C. meinkeni can be distinguished from all congeners by the followi…

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