Species identification
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This document provides identification information for several common fish species used in traditional fish farming in India. It describes key distinguishing physical characteristics for: - Catla, including a short, deep body; large cycloid scales; a wide, upturned mouth with prominent lower jaw; and gray/white coloring. - Rohu and Mrigal, which have elongated bodies with depressed snouts, large cycloid scales, terminal mouths without fringes, and dark gray/silvery coloring. - Singhi, which has a head width shorter than length; four pairs of barbles extending beyond the pectoral fin; dorsal fin starting in the front third of the body; and no scales. - Mag
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Fish classification
This document provides an overview of fish classification systems presented by Nelson in 1984 and updated in 2016. It outlines the major taxonomic groups of fish, including jawless fish (hagfish and lampreys), cartilaginous fish (sharks and rays), and bony fish classified into ray-finned fish and lobe-finned fish. The updated 2016 classification separates hagfish from other fish and divides bony fish into two subclasses based on fin structure.
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1) Catla catla, commonly known as catla, is a freshwater fish found predominantly in Asia, including India, Bangladesh, and Nepal. It is a fast-growing, planktivorous carp that feeds on zooplankton and algae.
2) Catla has prominent lips and thick lower jaws without barbels. It grows rapidly, reaching lengths of over 1 meter. It breeds during the monsoon season.
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What is biodiversity?
Father of biodiversity- E.O. Wilson.
The term ‘biodiversity’’ encompasses the variety of all life forms on earth.
Define biodiversity –
‘’ Biodiversity include of the particular area may be living organisms (plant and animal) called biodiversity ’’.
• Simple words in can be defined as the biodiversity .
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“Fish Species diversity is defined as the number of species and abundance of each species that live in a particular location”.
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India is one of the 17 mega biodiversity countries having four biodiversity hotspots namely the Western Ghats, eastern Himalayas, Indo-Burma and Sundaland that are included amongst the top ten most important hotspots in the world.
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2-Fisheries resource of India –
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1) Catla catla, commonly known as catla, is a freshwater fish found predominantly in Asia, including India, Bangladesh, and Nepal. It is a fast-growing, planktivorous carp that feeds on zooplankton and algae.
2) Catla has prominent lips and thick lower jaws without barbels. It grows rapidly, reaching lengths of over 1 meter. It breeds during the monsoon season.
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What is biodiversity?
Father of biodiversity- E.O. Wilson.
The term ‘biodiversity’’ encompasses the variety of all life forms on earth.
Define biodiversity –
‘’ Biodiversity include of the particular area may be living organisms (plant and animal) called biodiversity ’’.
• Simple words in can be defined as the biodiversity .
“Variety, variability b/w genes, spp. and ecosystem”.
Define fish diversity –
“Fish Species diversity is defined as the number of species and abundance of each species that live in a particular location”.
The number of species that live in a particular location is called species richness.
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Fishes display a wide variety of colors that serve important functions. Their coloration is generally related to their environment and provides camouflage, either through general color resemblance to their backgrounds, variable color change abilities, disruptive patterns, or countershading with dark tops and light undersides. Coloration also functions in communication, both between members of the same species through signals like threats or warnings, and between different species through intimidating color displays to deter predators. Fishes have specialized pigment cells called chromatophores that contain pigments like carotenoids, melanins, and purines to produce their colors, and these cells allow for both rapid and more permanent changes in coloration controlled by hormonal and nervous systems.
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This document summarizes the characteristics and adaptations of aquatic mammals. It describes two categories of aquatic mammals - amphibious mammals that live partly on land and partly in water, showing partial aquatic adaptations like webbed feet, and completely aquatic mammals that never come on land, showing complete aquatic adaptations like streamlined fish-like bodies. It also discusses the modifications, losses, and developments of new structures that aquatic mammals have undergone for an aquatic lifestyle, including modifications to their skeletons, lungs, teeth and other organs, as well as the loss of structures like hair and glands, and the development of new structures like tail flukes and baleen.
Study of Molluscs
The document describes several different mollusks and cnidarians. It provides details on the physical characteristics, habitats, and taxonomic classifications of various gastropods like Conus and Cypraea, bivalves like Perna and Meritrix, and cnidarians like Fungia, Favia, Gorgonia, Tubipora, Metridium, and Pennatula. The document also includes general information on the phylum Mollusca and its classes, as well as the characteristic features and classes of the phylum Cnidaria.
Order - Cetaceae, wildlife Biology
Sea mammals like whales, dolphins, and porpoises are highly adapted for marine life. They have torpedo-shaped bodies, lack external ears and hind limbs, and use tail flukes for propulsion. Their bones are lightweight and they have thick blubber for insulation. There are two orders - Cetacea including whales, dolphins, and porpoises which breathe air and give live birth, and Sirenia including manatees and dugongs which are herbivorous and inhabit fresh or marine waters. Cetaceans are divided into baleen whales which filter feed and toothed whales which hunt for food.
Animal kingdom Part ii
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Unit 2 laporan praktikum zover
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actinopterygi.pdf
This document provides information about the seminar topic Actinopterygii. It discusses the key characteristics and classification of ray-finned fishes. The major groups discussed include Chondrostei (bichirs, sturgeons, paddlefishes), Holostei (gars, bowfins), and Teleostei (the large superorder containing over 96% of all ray-finned fish species, including modern bony fishes). Examples are given of distinguishing features for each group, order, and some families. An overview of the evolution of traits such as scales, fins, and other anatomical features is also provided.
Fisheries and Aquaculture by Abdul Hameed Korai ( Tehsildar )
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For M.Sc , B.sc , Fisheries & aquaculture related exams
Classification of Class Cyclostomata up to order
This presentation provide information about salient feature of cyclostomata with proper examples and explanation why they are classified in this class.
Killer Whale.pptx
This document provides a scientific classification and overview of the physical characteristics, diet, habitat, behavior, life cycle, and conservation status of the killer whale (Orcinus orca). It classifies killer whales scientifically and describes their size, coloration, fins, teeth, skin, and blubber. It also summarizes their predatory diet, global habitat and distribution, migration patterns linked to prey, sexual maturity reaching 7-17 years old, and listing as protected on international agreements.
Petromyzon -External features and comparative hagfish
Petromyzon (lampreys) have a nearly worldwide distribution in salt and fresh waters. Their elongated, cylindrical bodies can reach up to a meter in length. They lack scales and paired fins. A median dorsal fin runs along their back and divides near the tail, which has a caudal fin. Lampreys have well-developed eyes covered by transparent skin, a single mid-dorsal nostril, and seven gill openings behind each eye. Their mouth is located at the base of their distinctive buccal funnel, which is surrounded by papillae and sensory cirri and contains rows of teeth.
Amphibia.pptx
Amphibia.pptxDr. Arun Gaware, Dept. Of Zoology, Shri Shivaji Arts, Commerce and Science College, Motala, Buldhana
Class Amphibia includes frogs, toads, salamanders and newts. They are small vertebrates that need water or moist environments to survive. They have thin, moist skin that allows for cutaneous respiration. They also have lungs and can breathe through their skin and mouth. The document then discusses the characteristics of amphibians, including having both aquatic and terrestrial stages of life. It provides details on the Indian bullfrog (Rana tigrina) as a type study, including its distribution, habitats, locomotion, feeding, breeding and other behaviors. The rest of the document describes anatomical features of R. tigrina such as its streamlined body shape, smooth skin, limbs adapted for jumping andFish
Fish are the gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups.
LIVING ORGANISMS AND THEIR SPECIES
1. The document describes the phylum Chordata, which includes animals with a notochord, dorsal nerve cord, and pharyngeal slits.
2. Chordata is divided into Protochordata and Vertebrata. Protochordata includes Urochordata and Cephalochordata. Vertebrata includes Agnatha and Gnathostomata.
3. The classes within Gnathostomata are described, including characteristics of Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves, and Mammalia.
Class Pisces. General characteristics and classifications of Super Class Pisces
This document provides information on the class Pisces (fish) including:
- General characteristics of Pisces such as aquatic habitat, streamlined body, respiration via gills, locomotion through fins, exoskeleton of scales or plates, etc.
- Classification of Pisces into subgroups including Chondrichthyes (cartilaginous fish like sharks), Osteichthyes (bony fish), Actinopterygii (ray-finned fish), Sarcopterygii (lobe-finned fish), and others.
- Details on characteristics and examples of subgroups like Selachii (sharks and rays), Holocephali (ratfish
Classification of mammals, M. Sc, Zoology, University of Mumbai.
This document summarizes the classification of mammals. It discusses the key characteristics used to classify orders of mammals such as marsupials, placentals, monotremes, and more. The classification system has evolved over time with contributions from scientists like Carl Woese, George Gaylord Simpson, and standardized systems from Vaughan and McKenna/Bell. Modern taxonomy is based on molecular analysis and places mammals into major groups like Afrotheria, Xenartha, Boreoeutheria.
Bony fish
Bony fish have a backbone, skull, brain and kidneys. They are classified into two main types - ray-finned fish and lobe-finned fish. Ray-finned fish make up the majority of fish and have fins supported by bony rays, while lobe-finned fish have fleshy lobes supporting their fins. Bony fish display a variety of adaptations for respiration, circulation, buoyancy and sensory functions.
Scoliodon Morphology.pptx
Scoliodon Morphology.pptxDr. Arun Gaware, Dept. Of Zoology, Shri Shivaji Arts, Commerce and Science College, Motala, Buldhana
- The document describes the dogfish (Scoliodon sarrokawah), a type of small shark.
- It lives in open seas and feeds on fish, crabs, and other crustaceans. It has a laterally compressed body up to 60cm long with dark gray top and pale white bottom.
- Its skin is rough due to embedded placoid scales, which form an exoskeleton. This protects it and reduces friction in water.Similar to Species identification (20)
Pisces general characters and classification - copy
Pisces general characters and classification - copy
Fisheries and Aquaculture by Abdul Hameed Korai ( Tehsildar )
Fisheries and Aquaculture by Abdul Hameed Korai ( Tehsildar )
Petromyzon -External features and comparative hagfish
Petromyzon -External features and comparative hagfish
Class Pisces. General characteristics and classifications of Super Class Pisces
Class Pisces. General characteristics and classifications of Super Class Pisces
Classification of mammals, M. Sc, Zoology, University of Mumbai.
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Species identification
- 1. Major Fish Fry and fingerlings species Identification For Traditional fish farmers By: B. Bhaskar FFO, Mahabubabad
- 2. catla 1) Body short, deep and laterally compressed with rounded abdomen 2) Large cycloid scales present through the body with bluntly rounded snout 3) Mouth wide and upturned with prominent protruding lower jaw and lower jaw consists of movable articulation at the symphysis. 4) Body colour is grayish on back and flanks, silvery-white below, fins dusky.
- 3. Rohu
- 4. Mrigal Identification characters: 1) Body elongated with depressed and obtusely rounded snout. 2) 2) scales are large & Cycloid type 3) Mouth is terminal and wide, lips without fringe, upper lip not continuous with lower lip. One pair of short rostral barbles present in Mouth. 4) Caudal fin homo-cercal with deeply forked. Body colour is usually dark grey on the back and silvery on the sides and belly.
- 5. Singhi(Heteropneustes fossilis) 1) The width of head is shorter than the length 2) four pairs of barbles present, the maxillary barble extends beyond the pectoral fin. 3) The fin commences in the anterior 1/3rd of the body 4) Anal and caudal fins are separated by a distinct notch. 5) Scales is absent
- 6. Magur (Clariaus batrachus) 1) The greatest width of the head equals its length. 2) Upper jaw is longer than the lower jaw 3) Four pairs of barbles 4) Pectoral fin reaches below the commencement of dorsal 5) Dorsal fin is very long and caudal fin is free. 6) Scales absent 7) The adult fish attains a length of about 32 cm
- 7. Anabas testudineus 1) Scales present on head, operculum and inter-opercle are strongly spinous 2) The outer row of villiform teeth injaw is the largest 3) Body covered by ctenoid scales and some are found over the bases of the dorsal, pectoral, anal and caudal fins also. 4) The fish attains a length of about 25cm and a weight of 160g. 5) The colour of the body is dark to pale greenish.