![]() Catla catla is mainly stay at this level to collect food. At this level oxygen is even higher which is suitable for various animal organisms. The uppermost layer of water, where sunlight enters, grows a large number of plankton which produce their food through the process of photosynthesis using their chlorophyll. They can filter though their gills and consume lots of phytoplankton and zooplankton.įish can also be classified into the following three types based on the niche they occupy in different water levels. Adult menhaden can filter 4 gallons of water per minute and receive different phytoplankton and zooplankton within their gills.Ī silver carp ( Hypophthalmichthys molitrix) is also a filter feeder that has a special filtration capacity. They capture phytoplankton from the water using their gill rakers. Menhaden ( Brevoortia) is also filter feeder that prefers to feed mainly on phytoplankton. They become a filter feeder after losing their teeth and consume phytoplankton and some tiny invertebrates. Gizzard shad ( Dorosoma cepedianum) fry feed on zooplankton until reach the length of one inch. They take these types of food by filtering water using their gill rackers. Some fish species take both zooplankton and phytoplankton. Some important omnivorous fishes are Cyprinous carpio, Cirrhinus cirhosus, Tor tor, Puntius ticto, Puntius sophore, Puntius sarana, Gadusia chapra, Colisa fasciatus, Eutropicthyes vacha, etc. Some feed on equal amount of animal and plant materials while other take a greater amount of animal foods. They consume varying percentage of plants and animal materials.Īmong omnivorous fishes, some feed on a large amount of plant materials. During their young stage, most of the fish prefer to eat zooplankton. ![]() Besides, they take zooplankton such as crustaceans, rotifers, insects and its larvae, mud and sands. Although their favorite food is insects, they also eat vegetable-based foods such as unicellular and filamentous algae, different aquatic plants when needed. These types of fish eat all kinds of food. Among them some are active predators such as Channa marulius, Channa striatus, Wallago attu, Chitala chitala, Mystus seenghala, etc. Some notable carnivorous fishes are Wallago attu, Channa punctatus, channa striatus, Channa marulius, Channa gachua, Chitala chitala, Chanda nama, Chanda ranga, Rita rita, Glossogobious giuris, Mystus seenghala, Mystus cavassius, Ompok pabda, etc. They take large numbers of animals as food such as Copepods, Cladocerans, insects such as beetles, water bugs, damsel flies, dragon flies, larvae, mollusks, different small fishes, tadpole larvae, etc. For example, Labeo rohita, Catla catla, Labeo bata, Ctenopharyngodon idella, Amblypharyngodon mola, Oreochromis mossumbicus, etc. ![]() In this case, the plant materials in their food consist of about 75% or more of the total gut contents while the animal-based food varies 1-10% in its diet. ![]() This type of fish survives, grows and reproduction by eating unicellular algae, filamentous algae, small water plants, portion of higher aquatic plants, detritus along with some mud or sand. Types of Fishįish are classified into the following four types based on the type of food. Food and feeding habits of fish is very important factor that helps to choose the fish type for cultivation. It is important to have scientific knowledge about the nature of fish, feeding habits, diseases and so on to cultivate fish through the choice using suitable control measures. Their cultivation system is also different. The shape, nature, feeding habits, color, etc. The more diverse fish types are found in these water bodies. The inland water bodies consist of small aquariums to nursery ponds, canals, beels, haor, baors (oxbow-lake), rivers, streams, flooded lands, etc.
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