Table of Contents for this Post
Fisheries: The science of producing fish and other
aquatic resources for the purpose of providing human
food, although other aims are possible (such as sport or
recreational fishing), or obtaining ornamental fish or fish
products such as fish oil.
Fishery: It is an entity engaged in raising or harvesting
fish. It involves the species or type of fish, area of water
or seabed, method of fishing, class of boats, purpose of
the activities or a combination of the foregoing features
and peolpe involved.
Area of the pond, A = 2(lb + ld + bd)
A = 2(20×10 + 20×1.5 + 10×1.5)
A = 2(200 + 30 + 15)
A = 2(245)
A = 490 m²
Volume of the pond, V = l×b×h
V = 20×10×1.5
V = 300m³
Number of fish is given by :
= 8 × 490
(i)Area: Consider the climate of the area that you want to
do your fish farming.
(ii)Water availability: Fish are aquatic animals and
therefore require water for survival.
(iii)Size: consider the size of the site you want to
establish the fish pond
Induced breeding process by means of which the extract
of the pituitary is introduced inside the body of both the
matured male and female fishes, then the carps after
being excited lay eggs in the pond water and
subsequently fertilization takes place
(i)Collection of Pituitary Extract
(ii)Selection of Breeders
(iii)Injection of Pituitary Extract
(iv)Spawning in Breeding Hapa
(v)Precautions for Induce Breeding
Fish marketing channel is the process where by fish
starts with the fish farmer, passes through a number of
intermediaries and ends with the ultimate consumer.
feeding regime is defined primarily by the composition
of the basic ration, then by feed supplements and
concentrates. In other words is the farm of origin has
(ii) hydrated lime
(i) Harmful to fishes
(ii) It reduces rate of fish reproduction
(iii) It can be harmful to man when eaten the affected
(iv) It causes water pollution
A fishpond is a controlled pond, artificial lake, or
reservoir that is stocked with fish and is used in
aquaculture for fish farming, or is used for recreational
fishing or for ornamental purposes. It may contain
shallow water with marsh and aquatic plants and
(5bi) Site selection:
(i) Consider the topography
(ii) Consider the soil type
(i) Consider the depth of the pond
(ii) Consider the size of the pond
(5biii) Stripping of topsoil:
(ii) improving of oxygen content by addition of
(5biv) Dyke construction:
(i) Checkmating the proper location for construction
(ii) Considering the distance to the pond
Zooplankton are small floating or weakly swimming
heterotrophic organisms that range from microscopic
organisms to large species, such as jellyfish which are
found within large bodies of water, including oceans and
(i)Many water resources can potentially be used,
including ponds, lakes, strip pits, rivers, and streams.
(ii)Cage culture requires a relatively small financial
(iii)Feeding, sampling, observation, and harvesting are
all comparatively simple.
(i)The fish are crowded in cages, and there is a relatively
high incidence of disease that can spread rapidly.
(ii)There can be localized poor water quality, such as low
dissolved oxygen, in and around cages.
(iii)Caged fish do not have access to natural food, so a
nutritionally complete diet is required.
(i)lack of clean water
(iv)lack of treatment
(ii)line and sinker.
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