1/29/2024 0 Comments Does a catfish have a backboneThey are a popular game fish and are also farmed for food. The canals are filled with tiny hair-like structures that detect changes in the water pressure via tiny pores connected to the system.Flathead catfish are a large species of freshwater catfish native to North America. This system is made up of a series of fluid-filled canals just below the skin of the fish’s head and alongside the body. It allows fish to locate predators and find prey. Lateral Line: The lateral line, found alongside a fish’s body from the operculum to the tail (caudal fin), senses vibrations or movements in the water. Some fish like catfish have a very developed sense of taste. Taste: Some fish have taste buds, however, these taste buds are located on the outside of the fish’s head and fins in small pores. Smell: Fish use their sense of smell to locate food and to aid in migrating. Fisheries biologists can also use these bones (otoliths) to age fish and determine the health of fish populations. The otoliths allow fish to sense sounds in the water. Fish have internal ears with pairs of inner ear bones called otoliths. Their ears lack a middle and outer ear because sound travels faster in water than in air. Hearing: Fish have ears but not external ear openings like humans do. Fish SensesĮyesight: Fish can see in two directions (one eye focusing on an object independent of the other whereas human’s eyes can only focus on one object at a time). Swim Bladder: The swim bladder is a long, skinny organ that can inflate/deflate with air allowing fish to float at different levels in the water column. Water flows in through their mouth and over their gills where oxygen is extracted and passed into the bloodstream. Gills: Gills are the feathery tissue structure that allows fish to breathe in water. On the catfish and bullheads, barbels are thought to be a sensory organ to help track down prey or food. They are the "whiskers" found on the head area of fish such as catfish or bullheads. Scales: Scales protect the fish from injury.īarbels: Barbels are not pictured. It is the small, thick, fleshy fin located between the dorsal and caudal fins.ĭorsal Fin: The dorsal fin helps maintain balance while swimming. Trout, salmon and catfish have an adipose fin. It is also the outlet for eggs or milt (sperm) during spawning.Īnal Fin: The anal fin stabilizes the fish while swimming.Ĭaudal Fin: The caudal fin moves, propels or pushes the fish through the water.Īdipose Fin: The adipose fin is not pictured it is not present on a lot of fish species. Vent: The vent removes waste and extra water. Pelvic Fin: The pelvic fin stabilizes the fish while swimming and allows for up-and-down movement in the water. It also acts as a brake to decrease speed while swimming. Pectoral Fin: The pectoral fin allows for abrupt changes in side-to-side direction and speed. It opens and closes to allow water to pass over the gills. Operculum: The operculum is the bony flap that protects the gills from harm. Mouth: The mouth is used to consume food. Nares: Similar to nostrils, except nares are used for smelling only (nostrils are used for both smelling and breathing). They use their vision to escape predators and find food. External AnatomyĮyes: Used for sight, fish can detect colors and see short distance with their eyes. Learn about the different fish adaptations below that allow a fish to survive in water. Fish are cold blooded animals that lay eggs and are well suited for living in water. All fish have fins and most have scales (with a few exceptions, like catfish which do not). Fish are vertebrates, meaning they have a backbone.
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