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The operculum is a series of bones found in bony fish and chimaeras that serves as a facial support structure and a protective covering for the gills; it is also used for respiration and feeding. [ 1 ]
The operculum lies on the top rear part of the foot. When the foot is retracted, the operculum is rotated 180° and closes the shell. [2] An operculum (fish), a flap that covers the gills in bony fishes and chimaeras. The cover that rapidly opens a cnida of a cnidarian such as a jellyfish or a sea anemone. The lid may be a single hinged flap or ...
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.
The current International Game Fish Association all-tackle world record for a white crappie is 2.35 kg (5.2 lb), caught on July 31, 1957, near Enid Dam, Mississippi, by angler Fred Bright, while the IGFA all-tackle length world record is a 39-centimetre (15 in) fish, caught on October 14, 2022, in Grenada Lake, Mississippi, by angler Doug Borries.
The federal Endangered Species Act was enacted on Dec. 28, 1973. Fifty years later, Pa. wildlife experts discuss the successes and challenges.
This is a list of fish with common names that are based on the names of other animals. The names listed here may refer to single species, broader taxa (genera, families), or assortments of types. Where names are ambiguous, the various meanings should be listed here.
A Pennsylvania angler caught his ‘unicorn’ fish Sunday in Erie. Colton Alex, 18, of Erie, was fishing in a tournament in Lake Erie when he hooked into a large Atlantic Salmon.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .