Perch live in schools, often mixing with other species of fish, usually in the top 50 metres of water. Spawning takes place in April, the very sticky eggs being produced in bands. Females twine these bands around submerged vegetation or among rocks while the males follow her and fertilise the eggs. The young fish hatch after about three weeks and remain amongst the egg bands until the yoke sac is exhausted. They then venture into more open water and feed on planktonic animals. As they grow they begin to shoal together close to the bank. Males mature when they reach the length of 7 – 8 cm, females when they are 10 cm.
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