Badis badis
The Blue perch (Badis badis) is a species of fish the in family Badidae of the order Perciformes. It is a small, predatory fish that feeds on tiny invertebrates. Maximum length is around 8 cm. Sexual dimorphism is minimal, though males normally display stronger colouration and females may appear more rounded when gravid. Colouration is extremely variable and changes with mood, though typically the fins are blue and dark vertical bands are apparent on the flanks.
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| Badis badis |
image source: http://www.flickr.com/photos/8263629@N05/
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| Badis badis |
image source: http://hu.wikipedia.org/wiki/User:Tomolyka
Historically the two genera that now make up the Badidae, Badis and Dario, were placed in the family Nandidae; this is no longer the case.
Badis badis is of slight commercial value as an aquarium fish.
Climate
Tropical (23 - 26°C)
Environment
- Benthopelagic
- Freshwater
- pH Range: 6 - 8
- dH Range: 5 - 19
Distribution
Asia.
- Indus River drainage in Pakistan from Kashmir (Jhelum River)
- Ganges River drainage in India, Bangladesh, and Nepal, from Himachal Pradesh (Yamuna River) to estuary
- Mahanadi River drainage
- Assam lowlands near Brahmaputra (Gauhati, Kaziranga, and Dibru River)
- Also reported in Bhutan.