1. Bony fish:
- Bass: Bass species, such as the largemouth bass and striped bass, are common in both freshwater and saltwater environments. They have a spiny dorsal fin and a soft dorsal fin, as well as a closed swim bladder that helps them maintain buoyancy.
- Trout: Trout, such as the rainbow trout and brown trout, are cold-water fish found in rivers and streams. They have a streamlined body and a forked tail, and they use their fins to swim and maneuver through the water.
- Tuna: Tuna species, such as the bluefin tuna and yellowfin tuna, are found in warm oceans around the world. They are powerful swimmers and can reach high speeds thanks to their streamlined body shape and crescent-shaped tail fin.
2. Cartilaginous fish:
- Sharks: Sharks, such as the great white shark and hammerhead shark, are large predatory fish found in all oceans. They have a cartilaginous skeleton and use their powerful jaws and sharp teeth to hunt and feed.
- Rays: Rays, such as the manta ray and stingray, are cartilaginous fish with a flattened body shape. They use their pectoral fins to glide through the water and their long tails for defense.
- Skates: Skates are bottom-dwelling cartilaginous fish with a diamond-shaped body. They use their pectoral fins to move along the seafloor and their tail to swim.
These are just a few examples of the diverse fish vertebrates that inhabit the Earth's waters. Each species has its unique characteristics and adaptations that allow it to survive in its specific environment.