Fish and its composition

Question 1

Arrange from smallest to largest:

Fiber
Meat
Myofibril
Muscle

Answer 1

Myofibril
Fiber
Muscle
Meat

Question 2

True or False. Fish muscles generally contain only 1/8 of the collagen found in red meats.

Answer 2

False. It is 1/10 of the collagen in red meats

Question 3

What do you call the segments divided by the short traverse sheets in fish?

Answer 3

Myotomes

Question 4

What do you call those short traverse sheets that divide the segments in fish?

Answer 4

Myocomata

Question 5

What is formed by myocommata and collagen fibers?

Answer 5

Endomysial retculum

Question 6

A characteristic in which the myotomes are not connected to the myocommata.

Answer 6

Gaping

Question 7

It is a type of nucleotide which is recognized as an important contributor to the flavor of good quality fish. It is a natural component of meat.

Answer 7

IMP or inosine-5 phosphate

Question 8

IMP is degraded into ________ and _________ compounds, which have been reported to be either flavorless or bitter.

Answer 8

Inosine and hypoxanthine

Question 9

Its presence in fish muscles can be used as a chemical index of freshness and quality in fish.

Answer 9

Hypoxanthine

Question 10

The production of _________ from ATP appears to be the most reliable indicator in fish.

Answer 10

Nucleotides

Question 11

True or False. There is only two methods used in catching fishes: (1) traditional method and (2) modern method.

Answer 11

False. Various methods are used in the capture and movement of fish within farms; ranging from the use of small nets for individual animals to large nets, or seines, for larger fish collection.

Question 12

A fish catching method having a large, vertically floating nets (made of monofilament or plastic) which boats use to surround shoals of fish they have identified on a fish finding sonar.

Answer 12

Purse seines

Question 13

True or False. Purse seines net can be up to one kilometer long.

Answer 13

False. One mile long

Question 14

This method of catching fish catches large volumes of fish. It
is also used for catching live tuna for ongrowing in pens (called ‘ranching’).

Question 15

This method of catching fish catches large volumes of fish. It
is also used for catching live tuna for ongrowing in pens (called ‘ranching’).

Answer 15

Purse seines

Question 16

These demersal trawling methods fish along or just above the seafloor catching bottom dwelling fish.

Answer 16

Otter (Single), Twin-Rig and Pair Trawlers

Question 17

A fish catching method that target fish on the seabed. They tow a net from either side of the boat.

Answer 17

Beam trawlers

Question 18

Fish that live in the upper water column of the ocean are targeted in what method of fish catching?

Answer 18

Pelagic or mid-water trawling

Question 19

True or False. Pelagic boats generally fish for a single species (unlike the demersal trawls).

Answer 19

True

Question 20

It uses metal-framed baskets instead of nets on the seabed for shellfish. The metal teeth rake out shellfish from the sand and gravel and the shellfish are collected into the pouch.

Answer 20

Dredging

Question 21

A fish catching method where passive nets are not actively towed by boats; they are either placed on the prevailing currents, hung from buoys which keep them suspended between the surface and the seabed, or staked to the seabed.

Answer 21

Drift, gill, and set nets

Question 22

It can be used to capture fish in surface waters (pelagic) as well as bottom living species (demersal).

Answer 22

Longlining

Question 23

It uses hand held or mechanically operated poles with baited hooks attached. This method targets naturally schooling fish which are attracted to the surface through use of lights or the scattering of bait.

Answer 23

Pole and line fishing

Question 24

It is a technique used to catch large game fish in upper waters, involves the boat slowly drawing a line of baited hooks or lures through the water.

Answer 24

Trolling

Question 25

It is a selective method and involves manually fishing with hooked lines. It is used in both the upper water layers as well as closer to the seabed.

Answer 25

Handlining

Question 26

These methods tend to be used by relatively small inshore vessels.

Answer 26

Hook and line methods

Question 27

These are traps, baited with fresh or salted fish, which are laid on the seabed and primarily used to catch shellfish.

Answer 27

Pots and creels

Question 28

It aims to maximize the quality of the landed fish raw material, to improve working conditions onboard fishing vessels by eliminating those catch handling procedures which cause physical strain and fatigue to such a degree that no fishermen need to leave their occupation prematurely for health reasons, and to give the fisherman the opportunity to concentrate almost exclusively on the quality aspects of fish handling.

Answer 28

Modern catch handling of fish

Question 29

What is the difference between pelagic fish and oceanic pelagic fish?

Answer 29

Pelagic fish inhabit the water column (not near the bottom or the shore) of coasts, open oceans, and lakes while oceanic pelagic fish typically inhabit waters below the continental shelf.

Question 30

This area of the water is where the demersal fishes both live and feed.

Answer 30

Demersal zone

Question 31

Another name for demersal fishes.

Answer 31

Bottom feeders

Question 32

True or False. Demersal fish tend to contain less fish oil than Pelagic fish.

Answer 32

True