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The following list of known freshwater fish species, subspecies, and hybrids occurring in Washington state is taken from Wydoski and Whitney(2003). Some scientific names have been updated or corrected. Trout nomenclature follows Behnke et al.(2002). Asterisks denote introduced fishes.
Mosquitofish have a 16- to 28-day gestation period. [12] They are lecithotrophic, which means during gestation, nutrients are provided to the embryos by a yolk sac. [35] If the gestation period is shorter, each newborn will at birth still have a yolk sac connected through a slit located on the ventral side of the body wall. [12]
(sport fish) Micropterus dolomieu: 2005 [61] Channel catfish (state commercial fish) Ictalurus punctatus: 1987 [61] Texas: Guadalupe bass (freshwater) Micropterus treculii: 1989 [62] Red drum (saltwater) Sciaenops ocellatus: 2011 [62] Utah: Bonneville cutthroat trout: Oncorhynchus clarkii (subspecies utah) 1997 [63] Vermont: Brook trout (cold ...
Many fish have a number of small outpocketings, called pyloric caeca, along their intestine. The purpose of the caeca is to increase the overall surface area of the intestines, thereby increasing the absorption of nutrients. [32] [33] The number of pyloric caeca varies widely between species, and in some species of fish no caeca are present at all.
Fish accounted for over 99% of a sauger's diet during autumn. Saugers also prey on shiners during spring and summer, but they do not account for a significant part of their diet. Shiners are absent from a sauger's diet in autumn probably due to their availability. [8]
Chondrichthyes (/ k ɒ n ˈ d r ɪ k θ i iː z /; from Ancient Greek χόνδρος (khóndros) 'cartilage' and ἰχθύς (ikhthús) 'fish') is a class of jawed fish that contains the cartilaginous fish or chondrichthyans, which all have skeletons primarily composed of cartilage.
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The elephantfish are a diverse family, with a wide range of different sizes and shapes. The smallest are just 5 cm (2.0 in) in adult length, while the largest reach up to 1.5 m (4.9 ft). They do, however, have a number of unique features in common.