Type locality is ‘Furo do Lago São Francisco, 7°40’S, 72°39’W, tributary at left bank of Rio Juruá, Acre State, Brazil’, and C. acrensis appears to be endemic to the rio Juruá basin.

Unfortunately diagnostic characters cannot be provided since we’ve been unable to obtain the type description, and little has been written about this species since it was published.

Type locality is ‘Streamlets near Tangla, Darrang District, Assam, India’, but records also exist from the Mahananda River in West Bengal state and other tributaries of the lower Brahmaputra river system, some of which originate in Bhutan.

Further upstream it’s been recorded in the Kalmoni riv…

Type locality is ‘Tenasserim, Myanmar’ which at time of description was used to refer to the portion of Myanmar lying to the south and east of the Ayeyarwaddy/Irrawaddy river delta, including present-day Kayah, Kayin, and Mon states, Bago Division, and possibly the southern Tanintharyi Region.

Blyth’s description paper covered fishes collected from the Sittaung River (plus a few Gangetic species) in what is currently Bago Division, but we’ve been unable to locate any modern records of D. affinis fro…

Type locality is given as ‘Jiucheng, Yunnan Province, China’ which could refer to one of several places with the same name in southwestern Yunnan.

It’s also been collected in Tengchong and Lianghe districts, Yingjiang county, and all known localities are within the Daying river (Dayingjiang) watershed, a major tributary of the larger Irrawaddy/Ayeyarwady river syst…

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.

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…

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.

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.

B. xanthozonus can be considered something of an enigma since its name has been widely misapplied in aquarium literature for decades, when in reality it’s probably never been exported for the ornamental trade.

The majority of fish seen labelled as such are either B. doriae or B. sabanus, themselves often misidentified.

Type locality is ’55 miles north of Singapore, freshwater ditches, Mawai District, Johore, Malaysia’, and this species has been recorded throughout much of Peninsular Malaysia and southern Thailand.

Records from Borneo and Singapore appear to be in error although it may have been extirpated from the latter but as with most members of the genus a degree of confusion surrounds its identity (see ‘Notes’).