Dissection of a Sea Bass Yee Jek Hui, Darryl (33) 1P1
Jan 22, 2016
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: Locomotion and side to side movement
Pectoral fin
Pelvic finAnal fin
Caudal (tail) fin
Caudal peduncle
Soft dorsal fin
Spiny dorsal fin
The Outside of a Sea Bass
Pelvic Fin: Move the fish up and down
Pectoral fin
Pelvic finAnal fin
Caudal (tail) fin
Caudal peduncle
Soft dorsal fin
Spiny dorsal fin
The Outside of a Sea Bass
Dorsal Fin: Lends stability in swimming
Pectoral fin
Pelvic finAnal 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 finAnal fin
Caudal (tail) fin
Caudal peduncle
Soft dorsal fin
Spiny dorsal fin
The Outside of a Sea Bass
Anal Fin: Like the dorsal fin, it also lends stability in swimming
Pectoral fin
Pelvic finAnal fin
Caudal (tail) fin
Caudal peduncle
Soft dorsal fin
Spiny dorsal fin
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 Filaments: Large surface area to maximise the amount of oxygen absorbed.
Gill arches
Gill rakers
Gill filaments
Gills of a Sea Bass
• Gill Arches: Provide support for the gills and their associated blood vessels
Gill arches
Gill rakers
Gill filaments
Gills of a Sea Bass
Gill Rakers: Bony, finger-like projections off the gill arch which function in filter-feeders in retaining food organisms
Gill arches
Gill rakers
Gill filaments
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.
HeartPyloric caeca
Internal Anatomy of a Sea Bass
Plyoric Caeca: Secrete enzymes that aid in digestion, may function to absorb digested food
HeartPyloric caeca
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
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.
Kidney
Stomach
Liver Intestines
Internal Anatomy of a Sea Bass
Stomach & Intestines: Break down and digest food as well as absorb nutrients.
Kidney
Stomach
Liver Intestines
Internal Anatomy of a Sea Bass
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
Kidney
Stomach
Liver Intestines
References
1. Badman’s Tropical Fish. (2010). Fish Anatomy [on-line]. Available: http://badmanstropicalfish.com/anatomy.html
2. Island Fishkeepers. (2008). Fish Anatomy [on-line]. Available: http://www.iowas.co.uk/fish%20anatomy.html
3. 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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