Identify the following chondrichthyes fishes.
Identify the following chondrichthyes fishes.
The correct option is C 1.- Scoliodon, 2.- Pristis, 3- Carcharodon, 4- Trygon .
The images are those of the following cartilaginous fishes:
1. Scoliodon has an elongated, spindle-shaped, body tapered at the ends. The trunk and tail are laterally compressed, while the head region is dorsoventrally compressed. It is commonly known as dogfish, and is a type of shark.
2. Pristis is commonly known as sawfish. It is characterised by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged so as to resemble a saw, and hence, the name.
3. Carcharodon, known as the great white shark, is known to prey upon a variety of other marine animals, including fish and seabirds. It is also ranked among the top predators in having the most recorded shark bite incidents on humans.
4. Trygon, commonly known as stingray, has a diamond-shaped pectoral fin disc slightly wider than long, and a whip-like tail with upper and lower fin folds. A stinging spine is present on the tail, equipped with a venom gland at its base.
1.- Scoliodon, 2.- Pristis, 3- Carcharodon, 4- Trygon .
The images are those of the following cartilaginous fishes:
1. Scoliodon has an elongated, spindle-shaped, body tapered at the ends. The trunk and tail are laterally compressed, while the head region is dorsoventrally compressed. It is commonly known as dogfish, and is a type of shark.
2. Pristis is commonly known as sawfish. It is characterised by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged so as to resemble a saw, and hence, the name.
3. Carcharodon, known as the great white shark, is known to prey upon a variety of other marine animals, including fish and seabirds. It is also ranked among the top predators in having the most recorded shark bite incidents on humans.
4. Trygon, commonly known as stingray, has a diamond-shaped pectoral fin disc slightly wider than long, and a whip-like tail with upper and lower fin folds. A stinging spine is present on the tail, equipped with a venom gland at its base.
