When the muscles are contracted like that, it makes them that much more vulnerable and susceptible to injury. You usually will not be able to visually see the abdominal strain injury from the outside. Although, if it is a serious enough strain there may be some bruising around the affected area.
The butterfish, or peprilus triacanthus, is a schooling fish with an oval body that roughly resembles a flounder.This small fish inhabits the waters along the Atlantic coast of North America between Florida and Newfoundland.lso known as escobar, sheepshead, and dollarfish, the butterfish is used as both food for human consumption and as bait for larger fish. It has been commercially fished in the United States since the 19th century. The fish was first used as a fertilizer until people discovered it was good enough to eat.
The fish's teeth are small, conical, and incisor-like. Spines of the Japanese butterfish's dorsal fin are short and not separated from the soft-rayed portion. The scales on the body of the butterfish are small, cycloid, and very deciduous (meaning that they are shed off easily).apanese butterfish live and feed near the bottom as well as in midwaters or near the surface. Generally they inhabit the epipelagic layer to 370 m. Adults are mainly bottom-dwelling but migrate upward at night in search of food.