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G6_Anatomy of Fish (align with the MATATAG CURRICULUM

It is all about part of fish

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Anatomy of Fish
Anatomy of Fish • Anatomy of Fish -The anatomy of fish simply refers to their body structure and internal parts, including external features like fins, scales, eyes, mouth, and tail; internal organs such as the heart, stomach, liver, intestines, and swim bladder (which helps them float); a skeleton made of bones or cartilage depending on the species; and gills that allow them to breathe underwater by absorbing oxygen from the water.
key anatomical features of fish: 1. Mouth – The mouth of a fish can varies significantly in shape and size, depending on its feeding habits. Types of Mouths: • Terminal Mouth – Located at the front of the fish, ideal for predatory species like the bass, which chase down the prey.
key anatomical features of fish: Types of Mouths: •Superior Mouth – Positioned on top, suited for species that feed on the surface, such as the catfish
key anatomical features of fish: Types of Mouths: •Inferior Mouth - Found on the underside, typical for bottom feeders like the sucker fish.
key anatomical features of fish: 2. Gills- Located behind the head, gills are essential for respiration. They extract oxygen from water and expel carbon dioxide, enabling fish to breathe underwater.
Types of Gills • Gill Arches - Support the gill structure and house gill filaments. • Gill Filaments- Increase surface area for gas exchange. • Gill Rakers- Prevent food particles from entering the gills Efficient gill function is essential for the overall
key anatomical features of fish: 3. Fins are essential for movement, balance, and stability in water.
Types of Fins • Dorsal Fins- Located on the back, these fins help maintain stability. • Pectoral Fins- Found on the sides, they assist in steering and braking. • Pelvic Fins- Located on the belly, these are used for stabilization. • Anal Fin- Found on the underside, helps maintain balance. • Caudal Fin- The tail fin used for propulsion.
key anatomical features of fish: Fish scales serve several purposes, including protection from predators and parasites, reducing water resistance, and aiding in the maintenance of body fluids. The main types of scales include.
• Cycloid Scales Smooth and round, typically found in fishlike trout and carp. • Ctenoid Scales- Similar to cycloid scales but with tiny spines or projections (ctenii), found in fishlike perch. • Ganoid Scales- Hard and diamond- shaped, these scales provide extra protection and are seen in fish such as gar. • Placoid Scales- Found in sharks and rays, these scales are rough and tooth-like, offering protection and reducing drag.
key anatomical features of fish: 4. Lateral Line System- This is a sensory organ that runs along the sides of fish, helping them detect vibrations and movement in the water, which is essential for navigation and hunting.