Dissection of a Sea Bass Yee Jek Hui, Darryl (33) 1P1

Parts of the Sea Bass

The Sea Bass The sea bass is white at the bottom, turning to a dark bluish silver at the top. The head and fins are darker than the rest of the body.

The Outside of a Sea Bass Pectoral fin Pelvic fin Anal fin Caudal (tail) fin Caudal peduncle Soft dorsal fin Spiny dorsal fin Pectoral Fin: Locomotion and side to side movement

The Outside of a Sea Bass Pectoral fin Pelvic fin Anal fin Caudal (tail) fin Caudal peduncle Soft dorsal fin Spiny dorsal fin Pelvic Fin: Move the fish up and down

The Outside of a Sea Bass Dorsal Fin: Lends stability in swimming Pectoral fin Pelvic fin Anal fin Caudal (tail) fin Caudal peduncle Soft dorsal fin Spiny dorsal fin

The Outside of a Sea Bass Caudal Fin: To propel the fish forward Pectoral fin Pelvic fin Anal fin Caudal (tail) fin Caudal peduncle Soft dorsal fin Spiny dorsal fin

The Outside of a Sea Bass Pectoral fin Pelvic fin Anal fin Caudal (tail) fin Caudal peduncle Soft dorsal fin Spiny dorsal fin Anal Fin: Like the dorsal fin, it also lends stability in swimming

Gills of a Fish Gills allow fishes to breathe underwater. They consist of gill filaments, gill arches and gill rakers.

Gills of a Sea Bass Gill arches Gill rakers Gill filaments Gill Filaments: Large surface area to maximise the amount of oxygen absorbed.

Gills of a Sea Bass Gill arches Gill rakers Gill filaments Gill Arches: Provide support for the gills and their associated blood vessels

Gills of a Sea Bass Gill arches Gill rakers Gill filaments Gill Rakers: Bony, finger-like projections off the gill arch which function in filter-feeders in retaining food organisms

Internal Anatomy of a Sea Bass Heart: Circulates blood throughout the body. The blood transports waste products from the cells to the kidneys and liver for elimination. Heart Pyloric caeca

Internal Anatomy of a Sea Bass Heart Pyloric caeca Plyoric Caeca: Secrete enzymes that aid in digestion, may function to absorb digested food

Internal Anatomy of a Sea Bass Muscles: Provide movement and locomotion Swim bladder Muscles Vent

Internal Anatomy of a Sea Bass Vent: The site of waste elimination from the fish's body Swim bladder Muscles Vent

Internal Anatomy of a Sea Bass Swim Bladder: A hollow, gas-filled balance organ that allows a fish to conserve energy by maintaining neutral buoyancy in water. Swim bladder Muscles Vent

Internal Anatomy of a Sea Bass Kidney Stomach Liver Intestines Liver: It assists in digestion by secreting enzymes that break down fats, and also serves as a storage area for fats and carbohydrates. The liver also is important in the destruction of old blood cells and in maintaining proper blood chemistry, as well as playing a role in nitrogen (waste) excretion.

Internal Anatomy of a Sea Bass Kidney Stomach Liver Intestines Stomach & Intestines: Break down and digest food as well as absorb nutrients. 

Internal Anatomy of a Sea Bass Kidney Stomach Liver Intestines Kidney: Filters liquid waste materials from the blood. It also regulates water and salt concentrations within the fish's body, allowing certain fish species to exist in freshwater or saltwater

References Badman’s Tropical Fish. (2010). Fish Anatomy [on-line]. Available: http://badmanstropicalfish.com/anatomy.html Island Fishkeepers. (2008). Fish Anatomy [on-line]. Available: http://www.iowas.co.uk/fish%20anatomy.html Australian Museum. (2010). Dissection of a Blue Mackerel, Scomber australasicus [on-line]. Available: http://australianmuseum.net.au/Dissection-of-a-Blue-Mackerel-Scomber-australasicus

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