Question

Rabbit Fish (Chimaera), is a connecting link between

• A. Cartilaginous and bony fishes
• B. Bony fishes and lung fishes
• C. Lung fishes and amphibians
• D. Cyclostomates and chondrichthyes

Answer 1

The correct option is A Cartilaginous and bony fishes

Chimaera, also known as Rabbit fish, is considered as the connecting link between cartilaginous and bony fishes.

Cartilaginous fish characters of Chimaera are:

• Presence of ventral mouth.
• Presence of cartilaginous endoskeleton.
• Claspers present in males.
• Presence of two dorsal fins.
• Placoid scales are present in young ones.

Bony fish characters of Chimaera are:

• Presence of four pairs of gills.
• Presence of small mouth with fleshy lips.
• Cloaca remains absent.
• Anus and urinogenital apertures are separate.
  

So, the correct answer is 'Cartilaginous and bony fishes'.