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Hydrolycus armatus (JARDINE, 1841)

Payara

March 13th, 2013 — 11:51am

H. armatus should probably not be considered a home aquarium subject at all given its eventual size and migratory natural behaviour.

Unfortunately, juveniles are seen for sale quite regularly, most often without adequate information regarding their long-term care, and it’s common to see them being maintained in medium-sized aquaria with no possibility of achieving their potential.

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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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Tucanoichthys tucano GÉRY & RÖMER, 1997

March 7th, 2013 — 2:27pm

Known only from the rio Uaupés system in Brazil with type locality ‘brook emptying into Igarape Yavuari River, tributary of River Uaupés, upper Negro River basin, 0°14’31″N, 68°03’48″W, Amazonas, Brazil’.

The full extent of its range is unclear but additional populations may exist.

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Copella callolepis (REGAN, 1912)

March 7th, 2013 — 8:50am

This species is quite common in the aquarium trade although normally misidentified as the congeners C. nattereri or the very similar C. meinkeni.

It was considered synonymous with C. nattereri for a number of years and was also referred to as C. cf. meinkeni by Zarske and Géry (2006) befo…

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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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Copella nattereri (STEINDACHNER, 1876)

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.

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Synaptolaemus latofasciatus (STEINDACHNER, 1910)

March 5th, 2013 — 9:52am

This species was described from a single specimen and included in the genus Leporinus until 2011 at which point the holotype was examined and recognised as corresponding to the fish described as Synaptolaemus cingulatus (Myers & Fernández-Yépez, 1950).

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Copeina guttata (STEINDACHNER, 1876)

Red-spotted Tetra

March 4th, 2013 — 2:20pm

Known from the middle and upper Amazon river basins in Brazil, Peru, Ecuador and Colombia.

Type locality is ‘Amazon River at Obidos, Cudajas, and Tabatinga; Rio Negro, Brazil.’

It apparently practises an interesting reproductive strategy in which the eggs are deposited in a shallow depression excavated from the substrate and guarded by the male.

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Leporinus friderici BLOCH, 1794

Threespot Leporinus

March 4th, 2013 — 10:42am

This species was described from Suriname but no specific locality was given.

It’s currently accepted to occur throughout much of the Amazon river system in Brazil, Peru and Bolivia with additional records from coastal drainages of Guyana, Suriname and French Guiana plus the island of Trinidad (Trinidad and Tobago).

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Leporinus copelandii STEINDACHNER, 1875

February 27th, 2013 — 4:20pm

Type locality is giev as ‘Rio Parahyba and tributaries at Mendez; Juiz de Fora; River Doce; River São Matheos; Rio Jequitinhonha; Rio Quenda at Santa Cruz’, all of which pertain to localities within the Paraíba do Sul and Doce river systems in Minas Gerais, Espírito Santo, rio de Janeiro and São Paulo states, southeastern Brazil.

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