Adaptation of sea anemone
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The sea anemone lives attached to rocks in shallow coastal waters, where it waits for small fish to come close before paralyzing them with venom so it can easily catch and eat them as a carnivore. Its habitat provides stability while its venom and swift reflexes help it survive by catching prey with minimal energy expenditure.
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This document discusses different types of fish migration. It describes potamodromous migration within freshwater systems, oceanodromous migration within marine systems, and diadromous migration between freshwater and marine systems. Diadromous migration includes catadromous migration patterns like eels that live in freshwater but spawn in the ocean, and anadromous patterns like salmon that live in the ocean but spawn in freshwater rivers and streams. The document provides details on the life cycles and migration routes of eels and salmon.
Reproductive biology
This document provides an overview of reproductive biology in fishes. It discusses the different types of sexuality observed in fishes, including unisexuality, bisexuality, hermaphroditism, and parthenogenesis. It describes the reproductive cycles and hormones that regulate reproduction for both male and female fish. Key aspects covered include the gonads, sexual dimorphism, seasonal breeding patterns, and hormonal control of the reproductive system through the CNS-pituitary-gonad axis.
male and female infertility
INFERTILITY : Male and Female infertility, introduction, etiology, investigations, management.
references : sperofff endocrinology, novaks gynecology.
Parental care in fishes By TANZEEBA AMIN
Parental care is an important behavior for perpetuating fish species. Many fish species care for their eggs and young in various ways. Some fish build different types of nests, such as circular, basin-shaped, or barrel-shaped nests to lay and care for eggs. Other fish deposit eggs in suitable locations or carry them in their mouths or pouches. Some fish are viviparous. Parental care benefits offspring survival but increases costs to parents. There is great diversity in parental care strategies among fish species.
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- 1. Adaptation of Sea Anemone on rocks, sea bottom, coral reefs Stability It is a Carnivore why To wait for fishes to come by close enough and will not waste energy Diet Habitat Small fishes Swift Where It is to paralyze the fish and make it stop moving thus easier to catch and eat. needs It tends to live in shallow coastal waters attached to rocks or other surfaces. Venom why