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Laetacara flamannellus OTTONI, BRAGANÇA, AMORIM & GAMA, 2012

July 19th, 2013 — 3:22pm

Sympatric fish species in the grasslands include Rivulus schuncki, juveniles of Hoplerythrinus unitaeniatus and an unidentified Nannostomus sp.

One contrasting locality was a flowing igarapé with the fish collected from shallow water alongside Apistogramma gossei, Crenicichla inpa,unidentified…

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Laetacara fulvipinnis STAECK & SCHINDLER, 2007

July 19th, 2013 — 2:25pm

Has been collected from habitats containing clear, soft, acidic, tea-coloured blackwater, most typically among leaf litter or submerged vegetation in very shallow (10-50 cm depth) water along the margins of streams and other minor tributaries.

At a village called El Niñal close to the mouth of the rio Pasimoni in the Casiquiare drainage pH was…

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Laetacara araguaiae OTTONI & COSTA, 2009

July 18th, 2013 — 3:59pm

This species was known as L. sp. ‘Buckelkopf’ in the aquarium hobby prior to publication of its official description.

It’s distinguished from all congeners by possessing 7-8 dorsal-fin rays (vs. 9–10 in L. dorsigera, L. fulvipinnis and L. thayeri, 8–9 in L. curviceps and L. flamannellus, and 9–11 in L. flavilabris).

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Rhinogobius sp. 'CO'

July 11th, 2013 — 4:40pm

Some wild populations have evolved a complex amphidromous breeding strategy in which adults live and spawn in freshwater or brackish streams and the pelagic post-hatch larvae are washed downstream to the sea where the post-larval fry spend the first part of their life developing in estuarine nursery zones under brackish to full marine conditions.

Once they reach a certain stage of development they begin to migrate upstream with some mov…

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Rhinogobius sp. 'CB'

July 11th, 2013 — 3:02pm

There are a number of unidentified species within the grouping of which several are referred to using a two-letter code based on their respective colour pattern for ease of reference, with ‘CB’ shorthand for ‘cross band’, for example.

R. sp. ‘CB’ is the commonest member of the grouping in Japan but has not yet entered the international aquarium trade as far as we know.

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Rhinogobius gigas AONUMA & CHEN, 1996

July 11th, 2013 — 10:00am

As is typical for the genus eggs are deposited on the ceiling of a cave or crevice and guarded by the male until hatching.

Several potential sites should be offered in the form of rocks (flat slate tends to be easiest to handle, see below), terracotta pipes, plant pots, etc.

A nuptial male will select a site and defend it agai…

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Channa lucius (CUVIER, 1831)

Forest Snakehead

July 10th, 2013 — 4:05pm

Prefers a dimly-lit aquarium with plenty of cover in the form of live plants, driftwood branches, terracotta pipes, plant pots, etc., arranged to form a network of nooks, crannies, and shaded spots.

Surface vegetation such as Ceratopteris spp. is also appreciated and makes the fish less inclined to conceal themselves.

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Channa sp. 'five stripe'

July 4th, 2013 — 9:54pm

Based on its colour pattern and limited details regarding its natural habitat this species may be adapted to dwelling between and under rocks.

Alipurduar lies in the moist tropical region of floodplains and foothills of the eastern Himalayas commonly referred to as the Dooars or Duars, traditionally considered the gateway to Bhutan.

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Channa sp. 'fire and ice'

July 2nd, 2013 — 8:30pm

This unidentified species first appeared in the aquarium trade during 2009.

It’s easily told apart from similar-looking congeners by the patches of vivid red pigmentation surrounding the eye and sides of the mouth plus the thick, reddish, marginal band in the caudal-fin.

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Channa diplogramma (DAY, 1865)

Malabar Snakehead

July 2nd, 2013 — 7:43pm

This species was considered synonymous with the Indochinese congener C. micropeltes for over a century before being revalidated in 2011.

Like in C. micropeltes colour pattern varies depending on the age of the fish.

Juveniles possess two longitudinal black stripes on the head and body with the are…

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