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'Geophagus' crassilabris STEINDACHNER, 1876

Panamanian Eartheater

February 14th, 2013 — 4:51pm

The most essential item of décor is a soft, sandy substrate so that the fish can browse naturally (see ‘Diet’).

Coarser materials such as gravel or small pebbles can inhibit feeding, damage gill filaments and even be ingested with the potential of internal damage or blockages.

Additional furnishings ar…

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Parosphromenus anjunganensis KOTTELAT, 1991

February 13th, 2013 — 8:48pm

It’s care requirements, disposition, and especially conservation status dictate that it should be maintained alone or alongside a group of small, peaceful cyprinids such as Boraras or Sundadanio spp.

Likewise, different Parosphromenus spp. should not be kept together since the females of many are very difficult to tell apart and some are undoubtedly capable of hybridising.

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Parosphromenus allani BROWN, 1987

February 10th, 2013 — 4:40pm

Type locality is given only as ‘Sarawak state, Borneo, East Malaysia’, with the material deriving from Sibu Division in western Sarawak.

It’s since been recorded at other localities within Sarawak, to which it appears endemic, but it remains unclear whether all represent a single species or not with those from the area around Lundu in northwestern Kuching Division in par…

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Parosphromenus alfredi KOTTELAT & NG, 2005

February 9th, 2013 — 4:39pm

Type locality is ‘Kota Tinggi, Mawai-Desaru road, Johor, Peninsula Malaysia’ and this species is endemic to a small portion of eastern Johor state, Peninsular Malaysia around the towns of Kota Tinggi, Mawai and Desaru.

A great deal of its original habitat has been lost via deforestation and other human alterations and it’s considered in grave danger of extinction.

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Rhinogobius nantaiensis AONUMA & CHEN, 1996

December 13th, 2012 — 4:05pm

This fish is normally imported alongside the congener R. candidianus and is actually the commoner of the two in the aquarium trade.

It looks very similar to R. candidianus but does not grow as large and possesses a more rounded snout.

Most specimens also have spot-like markings on the sides of the head which has led to them being identified as R. nantaiensis, but the fish do no…

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Rhinogobius candidianus (REGAN, 1908)

December 13th, 2012 — 12:58pm

This species is normally imported alongside a smaller-growing, near-identical congener currently listed as R. cf. nantaiensis with both traded as R. candidianus.

They can be separated by snout length, which is noticeably longer in R. candidianus, and adult size with R. cf. nantaiensis reaching just 50-55 mm.

R. candidianus can be distinguished from other congeners by a combination of cha…

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Rhinogobius zhoui LI & ZHONG, 2009

November 21st, 2012 — 12:02pm

This species has been in the aquarium trade since 2010 and is sold under several names including ‘Chinese vermilion goby’, ‘Zhou’s scarlet goby’, ‘scarlet goby’, and ‘flame goby’.

It can be told apart from congeners by the following combination of characters: second dorsal-fin rays I, 8-9; anal-fin rays I, 7-8; pectoral-fin rays 16-18; longitudinal scale series 29-31; predorsal scales 10-12; vertebral count 10+16=26.

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Betta midas TAN, 2009

November 17th, 2012 — 6:51pm

Not recommended for the standard community set-up for reasons already touched upon. It’s requirements and disposition mean it’s best kept alone or with very peaceful species since much bigger or more vigorous fishes are likely to intimidate and outcompete it.

Some small cyprinids and loaches that inhabit similar environments in nature are compat…

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Chlamydogobius eremius (ZIETZ, 1896)

Desert Goby

November 16th, 2012 — 4:42pm

Lake Eyre is a vast endorheic basin within which lies the lowest point in Australia at some 15 m BMSL. It only fills with water occasionally and when it does so forms the country’s largest salt lake.

C. eremius does not occur in the lake itself since no fishes are able to survive there, rather it inhabits isolated freshwater springs, flowing artesian bores (wells), and ephemeral waterholes where it tends to be associated with rocks and other submerged cover.

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Brachygobius mekongensis LARSON & VIDTHAYANON, 2000

Mekong Bumblebee Goby

November 14th, 2012 — 6:46pm

Apparently restricted to slow-moving or standing freshwater habitats such as marshes, temporal swamps and floodplains where aquatic vegetation and submerged grasses proliferate.

One locality consisted of undisturbed marshland with lightly tannin-stained water and dense growth of Vallisneria spp.

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