Fisheries Flashcards
Contribution of Fisheries to national GVA?
1.06%
Contribution of Fisheries to agriculture GVA
6.86%
Grass carp scientific name
Ctenopharyngodon idellus
Silver carp scientific name?
Hypophthalmichthys molitrix
Scientific name of Nile Tilapia
Oreochromis niloticus
India is the ____ largest fish producing country with ____% global share
3rd largest
8%
162 lakh tonnes
India is the ____ largest aquaculture producing nation in the world
2nd
Which superclass do fishes belong to? It is further divided into?
Gnathostomata
Chondrichthyes & Osterichthyes
C = Cartiledge, O = Osteo/bones
Examples of Osteichthyes
- Freshwater Bony fishes (Labeo rohita, Labeo catla)
- Lungfishes
Example of Chondrichthyes
Marine Fishes like Shark, Ray, Skates, Sawfish
Lepidosiren, Neoceratodus, Protopterus are example of?
Lungfishes
Osteichthyes
Hippocampus and Exocetus are examples of?
Marine Bony Fishes
Sea Horse and Flying Fish
Which fish has the highest % of protein?
Fatty Fish
Masula boats are used in which of the following parts of India?
Madras Coast
Smoking in fish is a form of?
Preservation
Fish that live in salt water but breed in fresh water
Hilsa, Lamprey, salmon
Anadromous
Fish that live in fresh water but breed in saltwater
Catrodomonous Fish
eel
Which fish are bottom Feeder? Middle Feeder? Column Feeder
- Catla and Silver & Grass Carp are surface feeders,
- Rohu & Grass Carp is a column feeder
- Mrigal and Common & Grass Carp are bottom feeders.
1 Indigenous and exotic breed
Nodal Agency for holistic development of seafood industry, including export of marine products in India
MPEDA (1972)
Marine Products Export Development Authority
Optimum pH required for most of freshwater fish is?
6.5-10
In inland fisheries which fish has been banned due to their predatory nature?
African catfish
Traditional methods of processing fish by salting, drying, smoking, pickling is known as?
Curing
Fish that move and live their entire life in freshwater?
Potadromous
Catfish, Salmon - potable water
A major indigenous carp, which is the fastest growing among fin fishes?
Catla
An organic substance, often used in fish ponds
Cow Dung
Managed aquaculture dependent on local natural setting, such as pond or coastal sea area
Extensive Aquaculture
Managed aquaculture controlled through human engineered means, such as managing water quality and sources of food
Intensive aquaculture
Migratory fishes that live in both fresh & salty water, independent of breeding
Amphidromous
Organisms able to adapt to a wide range of salinities is? Give an example
Euryhaline
Molly, green crab
An organism, that cannot tolerate a wide fluctuation in salinity
Stenohaline
Goldfish
A wastewater treatment gained vital importance in aquaculture. The principle of this method is to maintain a high C:N ratio by adding a carbohydrate source and water quality is improved through the production of high quality single-cell microbial protein
Biofloc Technique
Which fish is called an ‘aquatic chicken’
Tilapia
A technology where water is recycled and reused after mechanical and biological filtration and removal of suspended matter and metabolites. Through the system and not more than 10% of the total water volume of the system is replaced dialy
Recirculatory Aquaculture system (RAS)
According to the UN 2024 study called the ‘State of World Fisheries & Aquaculture’, which fish was the most fished marine species in 2022, ranking 8th in the world
Catla
Rohu & Mrigal ranking 2nd
Most common fresh water bacterial aquarium infection. Fish shows bloody sport or ulcers on the body, ragged fins and enlarged eyes
Aeromonas infection
Dropsy a disease in fishes causing bloating, is caused by?
Bacteria
Red Pest a disease of fishes caused by?
Ciprinida Bacteria
bloody streaks in fins
Vibrisis in fishes is caused by?
Bacteria
1 month mortality syndrome
Fish that socialise or hang out in loose groups in the same place are said to be?
Shoal
the production or deposition of large amount of eggs in water?
Spawning
Area along the river edge is called?
Riparian Zone
Growing stage of fishes
Spawn -> Egg -> Larvae (Hatchling) -> Fry -> Juvenile -> Adult
Spawn assuming the shape of a fish and grows about 1-2 cm, it is known as?
Fry
zooplankton feeder
The development stage of fish that lasts upto 1 year of age
Yearling