Rohu (Labeo rohita, Vorlage:Lang-bn) is a fish of the carp family Cyprinidae, found commonly in rivers and freshwater lakes in and around South Asia and South-East Asia. It is a herbivore. It is treated as a delicacy in Bangladesh and the Indian states of West Bengal, Orissa, Bihar and Uttar PradeshVorlage:Citation needed. The Kayastha community of Uttar Pradesh treats it as one of their most sacred foods: to be eaten on all auspicious occasionsVorlage:Citation needed.
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In Hindi it is called rehu (rawas is the Indian Salmon, which is quite different). It is called rohi in Oriya, rui in Bengali, rou in Assamese and Sylheti , rohu it self in malayalamVorlage:Citation needed, and is grown in kerala in agricultural basis . It popular in Thailand, Bangladesh, northern India and Pakistan. It is a non-oily/white fish.
The roe of rohu is also considered as a delicacy by Oriyas and Bengalis. It is deep fried and served hot as an appetizer as part of an Oriya and Bengali meal. It is also stuffed inside pointed gourd to make potoler dolma which is considered a delicacy. Rohu is also served deep fried in mustard oil, as kalia which is a rich gravy made of concoction of spices and deeply browned onions and tok, where the fish is cooked in a tangy sauce made of tamarind and mustard. Rohu is also very popular in Northern India and Pakistan such as in the province of Punjab. In Lahore it is a specialty of Lahori cuisine in Lahori fried fish where it is prepared with batter and spices. It is also a very popular food fish in IraqVorlage:Citation needed.
Biology
During the early stages of its lifecycle, it eats mainly zooplankton, but as it grows, it eats more and more phytoplankton, and as a juvenile or adult is a herbivorous column feeder, eating mainly phytoplankton and submerged vegetation. It has modified, thin hair-like gill rakers, suggesting that it feeds by sieving the waterVorlage:Or.
It is diurnal and generally solitary. It reaches sexual maturity between two and five years. In nature, it spawns in the marginal areas of flooded rivers. When cultured, it does not breed in lentic environments, so induced spawning becomes necessary.