The scientific name for Perch is Perca fluviatilis. Perch have an expected maximum weight of around 7lb (that’s 3.2kg). The average weight is normally around 6-8oz which is 170-228g. They can grow up to 20in (50cm) in length and live for around 13 years.
The British Record perch was caught in 1985 weighing in at 5lb 9oz (2.523kg), somewhere in Kent!
The perch is a stripy predatory fish which, when still young will attack anything small enough to fit in it’s mouth. As perch grow older they become a lot more wary, making a themselves much harder to catch. Its unique looks allow it to be easily recognisable. Its body is green with several black stripes, enabling it to have excellent camouflage in its watery lair of weeds and reeds. It’s not a fast swimmer like the pike, but it can go at reasonable speed for long periods.
Perch are hunters, preying on other species in the water. The babies feed on water fleas and other tiny crustaceans but they soon graduate to insect larvae such as bloodworms. If small enough fish are available, perch switch to a mainly fish diet when they weigh about 113g (4oz). Young perch hunt in schools, lying in wait among water plants until small fish such as bleak or roach stray too close. The school then sets off in pursuit, harrying the quarry until it is too tired to swim further. Perch catch their prey by biting the tail repeatedly from behind and below to restrict swimming. Characteristically the perch always captures and swallows its prey tail first. Yum!