What are two differences between cartilaginous fish and bony fish?

What are two differences between cartilaginous fish and bony fish?

They are marine. Endoskeleton is made up of bone. Endoskeleton is made up of cartilage. They have 4 pairs of gills….Difference Between Bony Fish and Cartilaginous Fish.

Bony Fish	Cartilaginous Fish
Tail is a homocercal type.	Tail is a heterocercal type.
Fertilization is external.	Fertilization is internal.
Mouth is normally terminal.	Mouth is at the ventral surface.

How can you prove that a fish is cartilaginous or bony?

As the name suggests, “bony fish” have a skeleton composed of only bones while a cartilaginous fish has a skeleton made entirely of cartilage.

What makes cartilaginous fishes unique?

The cartilaginous fish are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage rather than bone.

What other characteristics do chondrichthyes or cartilaginous fish share?

Cartilaginous fish are also known as Chondrichthyes and have one or two dorsal fins, a caudal fin, an anal fin, and ventral fins which are supported by girdles of the internal skeleton. Placoid scales, or dermal teeth, are characteristic of the skin of both sharks and rays.

What are 3 examples of cartilaginous fish?

Examples of the cartilaginous fish include sharks, rays, and skates.

What are the similarities between bony fish and cartilaginous fish?

Similarities between bony fish and cartilaginous fish are their centralized nervous systems, their sizes are similar, they both belong to the phylum chordata, they are both a family of the fish, and both have a lateral line organ that enables the fish to detect movement and vibration in the water surrounding them.

Which of the following is an example of bony fish?

Examples are sharks, rays, dog-fish, skates, sturgion. Osteichthyes: These are fishes with bony skeleton. Examples are Tuna, Sardines, Codfish, Salmon, Trouts, Herring etc.

What do you mean by cartilaginous fish?

: any of a class (Chondrichthyes) of fishes (such as a shark, ray, or chimaera) having the skeleton wholly or largely composed of cartilage — compare bony fish, jawless fish.

What are the main characteristics of chondrichthyes?

General characteristics of Chondrichthyes and Osteichthyes

• They belong to the same phylum Pisces.
• They both have endoskeleton and exoskeleton.
• They can breathe through gills.
• They have jaws and paired appendages.
• They can be oviparous, viviparous, or oviviviparous.

Why are sharks cartilaginous fish?

Cartilaginous skeleton Unlike fishes with bony skeletons, a shark’s skeleton is made out of cartilage. Sharks, rays, skates, and chimaeras (also know as rat fishes) all have cartilaginous skeletons. Cartilage is less dense than bone, allowing sharks to move quickly through the water without using too much energy.

What are 2 examples of cartilaginous fish?

Summary

• The cartilaginous fish are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage rather than bone.
• Examples of the cartilaginous fish include sharks, rays, and skates.

What do all cartilaginous fish have in common?

What are the unique characteristics of a cartilaginous fish?

Unique Characteristics. 1.The skeleton of the cartilaginous fish is out of a flexible bone- cartilage. The skeleton does not have any bone. 2.These fish have dorsal fins, an anal fin, a pair of ventral fins and a single caudal fin.

Where does a cartilaginous fish breathe its air?

Cartilaginous fish may also breathe through spiracles, rather than gills. Spiracles are found on top of the heads of all rays and skates, and some sharks.

When did bony fish and cartilaginous fish seperate?

If they stop swimming, they will sink like a stone. 10.Approximately 400 million years ago, the ancestors of the bony fish and cartilaginous fish seperated in the Silurian period.

How does a cartilaginous fish get its sperm?

All cartilaginous fish reproduce using internal fertilization. The male uses “claspers” to grasp the female, and then he releases sperm to fertilize the female’s oocytes.