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The white sucker is a long, round-bodied fish with a dark green, grey, copper, brown, or black back and sides and a light underbelly. The fish also has typical features of primitive Cypriniformes fishes, such as a homocercal tail, cycloid scales, and dorsal, pectoral, and pelvic fin rays. [5]
The sucking disc begins to show when the young fish are about 1 cm (0.4 in) long. When the remora reaches about 3 cm (1.2 in), the disc is fully formed and the remora can then attach to other animals. The remora's lower jaw projects beyond the upper, and the animal lacks a swim bladder. [9] Some remoras associate with specific host species.
Suckers were an important source of food for Indigenous Americans across the continent. Many fishing methods were employed with the most elaborate being stone fish traps constructed on spawning rivers, remnants of these traps can be seen today in Ahjumawi Lava Springs State Park where the Achomawi people trapped Sacramento suckers .
The white suckerfish can reach 30 cm (12 in) in standard length. The adhesive disk is short and wide, the length 34-40% and the width 22-26% of the standard length, with 13-14 lamellae . The pelvic fins are placed far forward and narrowly attached to the abdomen; the dorsal , anal , and pectoral fins are short with reduced rays.
[11] [12] Bigmouth buffalo may also accrue unique black or orange pigmentation markings with age, [3] [12] and in some rare individuals, white-edged fins. [6] Like other catostomids it has a long dorsal fin, but unlike all other extant species it has a terminal (forward-facing) mouth reflecting its unique, pelagic feeding ecology.
Catostomus is a genus of fish belonging to the family Catostomidae, commonly known as suckers. This genus of fish usually lives in freshwater basins. [ 2 ] Most members of the genus are native to North America, but C. catostomus is also found in Russia.
The black buffalo (Ictiobus niger) is a North American species of freshwater fish in the Catostomidae or sucker family. [2] With a lifespan of up to 108 years, it is among the longest-lived of freshwater fish species. [3] Found in the Mississippi Basin and southern Great Lakes.
The black redhorse (Moxostoma duquesnei, also duquesnii, duquesni) is a species of freshwater fish endemic to Ontario and the eastern half of the United States, where it lives in streams and small to medium rivers. A bottom-feeder, it feeds on microcrustaceans, aquatic insects, detritus, and algae. The black redhorse spawns in the spring.