The upcoming discussion will update you about the difference between lampreys and hagfish. Difference # Lamperys: 1. Habit and habitat: Live usually in the sea and migrate to the rivers for spawning. The adult are semi-parasitic but the larva leads independent life. 2. Shape of the body: The body is cylindrical and stout. 3. Fins: The dorsal fin is divided [...]
In this article we will discuss about the historical resume and classification of jawless vertebrates. Historical Resume: L. Agassiz (1857) placed the agnaths under the class Myzontes and proposed the following scheme for the lampreys and hagfishes: Class I. Myzontes. Order 1. Myxinides and Order 2. Cyclostomi. E. S. Goodrich (1909) gave the following classification in his book "Cyclostomes and [...]
In this article we will discuss about Hagfish:- 1. Introduction to Hagfish 2. Habit and Habitat of Hagfish 3. External Structures 4. Digestive System 5. Respiratory System 6. Circulatory System 7. Nervous System 8. Excretory System 9. Reproductive System 10. Development 11. Affinities and Systematic Position. Contents: Introduction to Hagfish Habit and Habitat of Hagfish External Structures of Hagfish Digestive [...]