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The European perch (Perca fluviatilis), also known as the common perch, redfin perch, big-scaled redfin, English perch, Euro perch, Eurasian perch, Eurasian river perch, Hatch, poor man's rockfish or in Anglophone parts of Europe, simply the perch, is a predatory freshwater fish native to Europe and North Asia. It is the type species of the ...
This species is typically greenish in color with dark vertical bars on its sides with a red or orange coloring in the tips of its fins. The European perch has been successfully introduced in New Zealand and Australia, where it is known as the redfin perch or English perch. In Australia, larger specimens have been bred, but the species rarely ...
Like most perches, the yellow perch has two separate dorsal fins. [8] The anterior, or first, dorsal fin contains 12–14 spines while the second has 2–3 spines in its anterior followed by 12–13 soft rays. The anal fin has 2 spines and 7–8 soft rays. [7] The opercula tips are spined, and the anal fin has two spines. [4]
The climbing perch is quite aggressive and is a threat to fish, birds and turtles native to Australia. It has an incredible defense mechanism that pushes out spiky fins which lodge into the throat ...
The adipose fin is a soft, fleshy fin found on the back behind the dorsal fin and just forward of the caudal fin. It is absent in many fish families, but found in nine of the 31 euteleostean orders ( Percopsiformes , Myctophiformes , Aulopiformes , Stomiiformes , Salmoniformes , Osmeriformes , Characiformes , Siluriformes and Argentiniformes ...
They have a single dorsal fin containing 1–3 spines and 10–11 soft rays. They also have an adipose fin, similar to trout, which helps to distinguishes them from their look-alike species, the yellow perch and the walleye. [2] Their tail or caudal fin is forked. Like most bony fish, the trout-perch has thin, flexible plates of bone or leptoid ...
The pelvic fins are placed on the thorax and have a single spine and 5 soft rays. They also have skeletal synapomorphies . [ 3 ] The maximum size attained is 100 centimetres (39 in) in the zander ( Sander lucioperca ) [ 4 ] but most of the species in the family are much smaller. [ 3 ]
Perciformes (/ ˈ p ɜːr s ɪ ˌ f ɔːr m iː z /), also called the Acanthopteri, is an order or superorder of ray-finned fish in the clade Percomorpha. Perciformes means "perch-like".". Among the well-known members of this group are perches and darters (), and also sea basses and groupers