Ichthyology Lecture 2

Flashcards covering key concepts from the Ichthyology lecture on fish taxonomy, characteristics, and evolution.

The order __ includes the group known as carpet sharks.

Orectolobiformes

Carcharhiniformes are also known as __ sharks.

Ground

The structural feature that defines Chondrichthyes is a __ skeleton.

Cartilaginous

The term __ refers to the collective group of skates and rays.

Batoidea

__ are known for having fused teeth and are commonly called ratfish.

Holocephali

Which group includes the largest number of living vertebrates? __.

Actinopterygii

The primary difference between skates and rays is in their reproductive methods: skates are and rays are .

oviparous; viviparous

Sarcopterygii, or lobe-finned fishes, produce true __ for respiration.

lungs

The evolutionary order __ includes the most primitive teleosts known as bony tongues.

Osteoglossomorpha

The sub-group of teleosts known for schooling behavior, such as herrings and anchovies, is called __.

Clupeomorpha

In teleost evolution, trends include reduction in the number of fin rays and __ vertebrae.

branchiostegal

The group __ contains sharks such as the dogfish and angel sharks.

Squaliformes

Myxine glutinosa belongs to the group known as __.

Cyclostomata

The family __, contains sturgeons can breathe air via ventral lungs.

Chondrostei

Cyclostomata includes two main species: and .

Myxine glutinosa; Petromyzon marinus