Pearlspot,
Etroplus suratensis, known locally as ‘Karimeen’ (figure 1), is the largest
among Indian cichlids, a high-valued food fish endemic to peninsular India and
Sri Lanka. The green chromide (Etroplus suratensis) is a species of cichlid
fish from freshwater and brackish water in southern India and Sri Lanka.[1] It
is also known as the pearlspot or karimeen (കരിമീന്)
in Malayalam and koral in Bengali. In India, it is found throughout Kerala,
especially in Kerala Backwaters around Alleppey, (Alappuzha), and in western
flowing rivers in Karnataka, and backwaters of Andhra Pradesh. It feeds on
algae, plant material and insects.
The
fish, known locally in Kerala as Karimeen, is considered a delicacy. Some of
the prominent dishes are the Karemeen Fry, Karemeen Molly and Karemeen
Pollichathu. This fish is fairly expensive and is available throughout the
year. It is caught mainly using gillnets. It commonly reaches 20 centimetres
(7.9 in) in length, and the maximum length is twice that.[1] In 2010 state
fisheries minister of Kerala declared Karimeen as the official fish of Kerala
state. Year 2010-'11 was observed as 'The Year of the Karimeen". Karemeen
Polichathu is commonly wrapped in banana leaves.
The
fish attains maturity at the end of the first year, with sexual dimorphism
perceptible only during the breeding season Fecundity of pearlspot is low,
varies from 500 to 7550 Breeding of the fish in Vembanad Lake peaks during December–February
and June–July. The presence of two peaks in gonadosomatic index and two
distinct batches of eggs in the same ovary is corollary to its breeding habit. E.
suratensis breeds throughout the year in ponds, with a peak during September.Breeding
behaviour includes pairing, nest making, pit nursing and parental care. As a
prelude to breeding, the male and female fish form a spawning pair. The breeding
pair utilize any stationary solid objects (coconut leaves, husk, roots, stones,
bricks, etc. lying at the lake bottom, and along the shallow periphery of the
water body, for attaching the eggs. After the eggs (250 to 1573 eggs per brood)
are laid by the female and are stuck to the substratum one by one, the male fish
fertilizes them immediately.
The process of egg laying and fertilization
continues several times and the eggs are cemented closely without touching each
other. Spawning is completed within 45 to 60 min. The parents aerate the egg by
rapidly fanning with their pectoral fins. The eggs hatch in 70–72 h, and the
hatchlings are transferred by the parents to the breeding pit, which is
prepared on the shallow pond bottom. Once
the eggs are transferred, the female closely guard the pits. During this
period, the parents continue fanning the pit with their fins to increase
oxygenation required for the hatchlings sheltered in the pit. E. suratensis exhibits
a prolonged parental care till the young ones attain a size of 30–40 mm. As the
fish hardly eat during parental care, the growth rate of the mature fish is
poor in pond rearing conditions.
very informative
ReplyDeleteInformative and tried to cover all about pearlspot fish. It will be very useful, if you explains fishing techniques in detail.
ReplyDeleteGood information. thanks.
ReplyDeleteI like this fish. But I'm in Philippines. Could you help me how to get this fish, so I may breed in our place.
ReplyDelete