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The spawning fish select sandy or pebbly shallows and deposit their eggs primarily between sundown and midnight. Females release eggs in batches of about 30,000 eggs, though very large fish deposit an estimated as many as 156,000 eggs. Total annual egg production is 200,000–600,000 eggs per female, with larger fish producing more.
The hybrid fish are aggressive and have larger mouths than their bluegill parent. These fish also grow faster than other small mouth fish due to its bigger mouth. Greengills or hybrid bluegills are the most efficient in growth and can reach approximately 2 lbs or 0.91 kg in one year. [33]
A flounder's diet consists mainly of fish spawn, crustaceans, polychaetes and small fish. Flounder typically grow to a length of 22–60 centimeters (8.7–23.6 in), and as large as 95 centimeters (37 in). Their width is about half their length.
The larvae will spend 1 to 3 months in waters over the continental shelf. The Chesapeake Bay is a popular nursery for juvenile menhaden. Larval fish will enter the Bay in late winter and early summer. The larval fish will move into lower salinity waters in estuarine tributaries while juvenile and immature fish remain in the Bay until the fall.
Lingcod on a rocky seafloor. Photo credit to Alaska Department of Fish and Game. When lingcod are in their larvae life stage, they typically live near the surface of the ocean. At the juvenile life stage, lingcod live on sandy ocean bottoms with eelgrass or kelp beds near the shore. [15]
Black crappies mature at 2–4 years. Growth during the first four years of their life is faster in the warm waters of the southern part of its range than in cooler waters in the north. [6] White crappie have a higher growth rate in terms of length than black crappie. [7] Most fish that are caught for sport are between 2 and 5 years old.
The life cycle of krill is relatively well understood, despite minor variations in detail from species to species. [ 15 ] [ 24 ] After krill hatch, they experience several larval stages— nauplius , pseudometanauplius , metanauplius , calyptopsis , and furcilia , each of which divides into sub-stages.
The belly is off-white or cream, and the fish has no scales. [5] Additionally, there are darker, brown-black speckles along the entire surface of the fish. The brown bullhead has a dorsal fin that bears a spine, [6] a single adipose fin posterior to the dorsal fin, abdominal pelvic fins, and an anal fin with 21 to 24 rays. The tail is only ...