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Fish reproduction. A pair of bettas spawning under a bubble nest. Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. [1] There may also be a range of secondary organs that increase reproductive fitness.
Douglas realized that offering replica mounts (release mounts) might be a way to stop wasteful industrial taxidermy practices. At the time, many fishing charter businesses had arrangements with taxidermy outfits which would kick back big commissions to captains and crew, and trophy game fish were being killed annually by the metric ton.
Sauger. The sauger (Sander canadensis) is a freshwater perciform fish of the family Percidae that resembles its close relative, the walleye. The species is a member of the largest vertebrate order, the Perciformes. [ 3 ] It is the most migratory percid species in North America. [ 4 ] Saugers have two dorsal fins; the first is spiny and the ...
A drawing of the glochidium of the swan mussel (Anodonta cygnea).The larva is 0.35 mm long Glochidia of the mussel Lampsilis higginsii. The glochidium (plural glochidia) is a microscopic larval stage of some freshwater mussels, aquatic bivalve mollusks in the families Unionidae and Margaritiferidae, the river mussels and European freshwater pearl mussels.
Cetomimidae is a family of small, deep-sea cetomimiform fish. They are among the most deep-living fish known, with some species recorded at depths in excess of 3,500 m (11,500 ft). Females are known as flabby whalefishes, Males are known as bignose fishes, while juveniles are known as tapetails and were formerly thought to be in a separate ...
These fish are typically 4 to 10 inches (10 to 25 centimetres) long, but can grow to over one foot (30 cm) in length, and reach 2.25 pounds (1.02 kg). [4] The warmouth is occasionally confused with the rock bass ( Ambloplites rupestris ) or green sunfish ( Lepomis cyanellus ), both of which share its relatively large mouth and heavy body.
Coelacanth. Coelacanths (/ ˈsiːləkænθ / ⓘ SEE-lə-kanth) (order Coelacanthiformes) are an ancient group of lobe-finned fish (Sarcopterygii) in the class Actinistia. [2][3] As sarcopterygians, they are more closely related to lungfish and tetrapods (which includes amphibians, reptiles, birds and mammals) than to ray-finned fish.
Ampullae of Lorenzini (sg.: ampulla) are electroreceptors, sense organs able to detect electric fields. They form a network of mucus -filled pores in the skin of cartilaginous fish (sharks, rays, and chimaeras) and of basal bony fishes such as reedfish, [1] sturgeon, [2] and lungfish. [1] They are associated with and evolved from the ...
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related to: fish mounts reproductions from pictures to pdf notes free printable