This document identifies and describes the different types of fish and seafood. It discusses finfish and shellfish, providing examples of each. For finfish, it describes saltwater and freshwater varieties, and lists common types of flatfish and roundfish. For shellfish, it identifies mollusks and crustaceans as the two types, giving examples for each group. The document also covers the composition and structure of fish, nutritive value, market forms, and market forms of shellfish.
Introduction:
Fishes are marine animals that have a streamlined body that helps them swim without much resistance in the water, and they also have fins to assist them in swimming.
General characteristics of Fish
They are bilaterally symmetrical organisms, and they are triploblastic organisms.
Fishes have segmented bodies. Internal segmentation is present.
The majority of the fish are spindle-shaped, with others being Dorso-ventrally depressed, laterally compressed, snake-like (Mastacembelus), and globe-like (Tetradon).
Fish Anatomy
Fish anatomySource
Exoskeleton:
Scales and bony plates cover the fish’s body.
Scales are recognized as a fish’s identity card because of their many roles.
The genesis of scales is mesodermal.
Siluriformes fishes have no scales (catfishes), and few fishes (major carps) have scales on their heads.
Fins:
Fins help in swimming and balance.
Fin rays support the fins, and fins feature both spiky and soft rays.
Fins without fin rays are known as adipose fins (Mystus).
Fins are divided into two categories: paired and unpaired fins.
Pectoral and pelvic or ventral fins are paired fins.
The dorsal, anal, and caudal fins are the only ones that aren’t paired.
Fins are either typical or modified in the majority of fish.
Tail:
During swimming, the tail is important for shifting direction.
The caudal fin is the last fin on the tail.
The caudal fin can be forked, circular, or confluent with the dorsal and anal fins.
Closed circulatory system:
Fishes have a closed circulatory system.
The heart is divided into two chambers, is venous and tubular, and has either a conus or bulbous arteriosus and RBCs have a biconvex shape.
Nervous system:
Cerebrum is not well developed in the nervous system, and sharks, in particular, have well-developed olfactory lobes.
There are ten pairs of cranial nerves discovered.
Respiration:
Branchial respiration occurs via gills.
The branchial chamber is where the gills are found.
There are 5-7 gills in cartilaginous fishes, but in teleosts, there are 3- 5 gills.
Gill arch supports each gill, gill lamellae facilitate gaseous exchange, and gill rakers are extensively developed in plankton-feeding fishes, where they serve as a filter.
In cartilaginous fishes, the branchial system is open, but the branchial system is closed in bony fishes.
The operculum is exclusively seen in bony fish.
There are many pairs of external branchial apertures, but there is only one pair in bony fishes.
Hemoglobin is a pigment found in the blood.
Excretion:
Mesonephric kidneys are found in ammnotelic animals’ excretory systems.
Marine fish keep urea in their blood to stay in an isotonic state with saltwater.
Economic Importance:
They’re eaten worldwide, and the fish liver is the primary source of vitamin A and D-rich liver oil.
Fish oils are utilized externally in the soap industry and tanneries.
Beautifully colored fishes are currently the vogue in aquariums.
Conclusion:
Fishes are water animals having a streamlined body that
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Introduction:
Fishes are marine animals that have a streamlined body that helps them swim without much resistance in the water, and they also have fins to assist them in swimming.
General characteristics of Fish
They are bilaterally symmetrical organisms, and they are triploblastic organisms.
Fishes have segmented bodies. Internal segmentation is present.
The majority of the fish are spindle-shaped, with others being Dorso-ventrally depressed, laterally compressed, snake-like (Mastacembelus), and globe-like (Tetradon).
Fish Anatomy
Fish anatomySource
Exoskeleton:
Scales and bony plates cover the fish’s body.
Scales are recognized as a fish’s identity card because of their many roles.
The genesis of scales is mesodermal.
Siluriformes fishes have no scales (catfishes), and few fishes (major carps) have scales on their heads.
Fins:
Fins help in swimming and balance.
Fin rays support the fins, and fins feature both spiky and soft rays.
Fins without fin rays are known as adipose fins (Mystus).
Fins are divided into two categories: paired and unpaired fins.
Pectoral and pelvic or ventral fins are paired fins.
The dorsal, anal, and caudal fins are the only ones that aren’t paired.
Fins are either typical or modified in the majority of fish.
Tail:
During swimming, the tail is important for shifting direction.
The caudal fin is the last fin on the tail.
The caudal fin can be forked, circular, or confluent with the dorsal and anal fins.
Closed circulatory system:
Fishes have a closed circulatory system.
The heart is divided into two chambers, is venous and tubular, and has either a conus or bulbous arteriosus and RBCs have a biconvex shape.
Nervous system:
Cerebrum is not well developed in the nervous system, and sharks, in particular, have well-developed olfactory lobes.
There are ten pairs of cranial nerves discovered.
Respiration:
Branchial respiration occurs via gills.
The branchial chamber is where the gills are found.
There are 5-7 gills in cartilaginous fishes, but in teleosts, there are 3- 5 gills.
Gill arch supports each gill, gill lamellae facilitate gaseous exchange, and gill rakers are extensively developed in plankton-feeding fishes, where they serve as a filter.
In cartilaginous fishes, the branchial system is open, but the branchial system is closed in bony fishes.
The operculum is exclusively seen in bony fish.
There are many pairs of external branchial apertures, but there is only one pair in bony fishes.
Hemoglobin is a pigment found in the blood.
Excretion:
Mesonephric kidneys are found in ammnotelic animals’ excretory systems.
Marine fish keep urea in their blood to stay in an isotonic state with saltwater.
Economic Importance:
They’re eaten worldwide, and the fish liver is the primary source of vitamin A and D-rich liver oil.
Fish oils are utilized externally in the soap industry and tanneries.
Beautifully colored fishes are currently the vogue in aquariums.
Conclusion:
Fishes are water animals having a streamlined body that
Roti Bank Hyderabad: A Beacon of Hope and NourishmentRoti Bank
One of the top cities of India, Hyderabad is the capital of Telangana and home to some of the biggest companies. But the other aspect of the city is a huge chunk of population that is even deprived of the food and shelter. There are many people in Hyderabad that are not having access to
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3. - Identify types, varieties, market
forms, nutritive value, and
composition of fish and seafoods.
4. IDENTIFY TYPES, VARIETIES, MARKET FORMS,
NUTRITIVE VALUE, AND COMPOSITION OF FISH AND
SEAFOODS.
Seafoods Types
Variety
Market
Forms
Nutritive
Value
Composition
1. Milk
fish
2. Clams
3. Shrimp
6. WHAT ARE THE 2 TYPES OF
SEAFOODS?
I.FIN FISH
II.SHELL FISH
7. Fin Fish are fishes with fins and internal
skeletons
Shell Fish are Fish with external shells
but no internal backbone structure.
They have outer shells only.
Can you identify a Fin Fish?
How about Shell Fish?
8. I. FIN FISH
A. SALT WATER
B. FRESH WATER
A Fin fish is also classified into 2 types, can
you identify the 2 types of fin fish according
to where do they live?
9. A. FLAT FISH
B. ROUND FISH
Saltwater fish has another
2 type, what are those 2
types?
17. • 1. MOLLUSKS- Are Soft Sea Animals with
Shell
a. Bivalves – they have a pair of hinged
shells ex. oysters
b. Univalves- they have single shells
c. Cephalopods- Head foot which is the
tentacles are completely merged with
each other, they have a lot of arms and
soft bodies. Octopus, squid
2. Crustaceans are animals with segmented
shells & jointed legs
Ex: Crabs, Lobster, shrimps
Two types of Shellfish
21. 1. Scales protect fish from injury, much like skin on the human
body
2. The eyes of a fish have large round pupils which do not vary in
size.
3. Gills A fish “breathes” by closing the gills and opening its mouth
to take in water.
4. Fins are usually the most distinctive anatomical features of
a fish. Fins located in different places on the fish serve different
purposes such as moving forward, turning, keeping an upright
position or stopping. Most fish use fins when swimming
5. The mouth serves for taking in food; also for the breathing
current of water
6. Tail use for moving forward and stopping and swimming
COMPOSITION OF A
FISH
Mout
h
Eyes
Fins
Gills
Scale
s
Tail
22. A fish is made up of water, protein, fats and small amount
of minerals and vitamins. It has very little connective
tissue. This means that:
1. Fish cooks very quickly even at low heat.
2. Fish is naturally tender. High heat will result to
toughening of protein.
23. MARKET FORMS OF FISH
• 1. WHOLE
• 2. DRAWN
• 3. DRESSED
• 4. STEAKS
• 5. FILLET
• 6. BUTTERFLIED FILLETS
• 7. STICKS OR TRANCHES