Blueback herring Blueback herring The blueback herring or blueback shad ("Alosa aestivalis") is an anadromous species of herring from the east coast of North America, with a range from Nova Scotia to Florida. Blueback herring form schools and are believed to migrate offshore to overwinter near the bottom. These fish are silvery in color, have a series of scutes (modified, spiny and keeled scales) along their bellies, and are characterized by deep bluish-green backs. They reach a maximum size of approximately and are believed to live up to 8 years. The most distinguishing characteristic of this species is the black to dusky
Chaca (genus) Chaca (genus) Chaca is the only genus in the catfish family Chacidae. These fish are commonly known as squarehead catfishes, frogmouth catfishes, or angler catfishes. These unusual fish have a sedentary lifestyle and spend much of their time motionless. The name "Chaca" is because, when removed from the water, they will rapidly repeat the sound "chaca". Only "C. chaca" makes these sounds; the other species do not. The four currently recognized species in this genus are: "Chaca" species are found in fresh water from eastern India to Borneo. "C. chaca" is found in rivers, canals, and ponds of grassland, scrubland,