Where do Osteichthyes live?

They are found in tropical, temperate, and polar seas as well as virtually all fresh water environments. Some species of bony fishes live as deep as 11 km (6.8 mi.) in the deep sea.

1. Where are osteichthyes located?
2. What habitat do fish live in?
3. Where do cartilaginous fish live?
4. What do class osteichthyes eat?
5. Where did bony fish come from?
6. What builds the bony skeleton of the Osteichthyes?
7. How do fish survive in their habitat?
8. How do fishes survive in water?
9. What is class Osteichthyes?
10. What is the difference between cartilaginous and bony fish?
11. Is a hagfish a cartilaginous fish?
12. Are sexes separate in Osteichthyes?
13. Are bony fish predators?
14. How do class Osteichthyes breathe?

Where are osteichthyes located?

They are ubiquitous throughout freshwater and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from Paedocypris, at 8 mm (0.3 in), to the massive ocean sunfish, at 2,300 kg (5,070 lb), and the long-bodied oarfish, to at least 11 m (36 ft).

What habitat do fish live in?

Fishes are found in freshwater and marine habitats including ponds, lakes, sea, oceans, etc.

Where do cartilaginous fish live?

Cartilaginous fish live all around the world, in all kinds of water - from rays that inhabit shallow, sandy bottoms to sharks that live out in the deep, open ocean.

What do class osteichthyes eat?

Food Preferences and Resources

Some of the animals common in the diets of bony fishes include: annelid worms, marine snails, mussels, clams, squids, crustaceans, insects, birds, amphibians, small mammals, and other fishes.

Where did bony fish come from?

Bony fishes, class Osteichthyes, are characterised by bony skeleton rather than cartilage. They appeared in the late Silurian, about 419 million years ago. The recent discovery of Entelognathus strongly suggests that bony fishes (and possibly cartilaginous fishes, via acanthodians) evolved from early placoderms.

What builds the bony skeleton of the Osteichthyes?

Vertebrates, Overview

Osteichthyes is diagnosed by the presence of lungs (see below) and by most of the bony skeleton being formed from cartilaginous precursors. ... The skeleton of actinopterygians is extensively ossified and the internal pectoral skeleton has broad bony plates that facilitate support of fin rays.

How do fish survive in their habitat?

Fish are adapted to move efficiently and sense their surroundings under water. They've also evolved coloring to help them evade predators and gills to get the oxygen they need to survive.

How do fishes survive in water?

They get the oxygen they need from the water they live in. Fish have special filters in the sides of their body called 'gills' that act as their 'lungs'. ... The fish opens its mouth to let water flow through the gills and out of its body. As the water passes the gill membrane, oxygen is absorbed into the bloodstream.

What is class Osteichthyes?

bony fish, (superclass Osteichthyes), any member of the superclass Osteichthyes, a group made up of the classes Sarcopterygii (lobe-finned fishes) and Actinopterygii (ray-finned fishes) in the subphylum Vertebrata, including the great majority of living fishes and virtually all the world's sport and commercial fishes.

What is the difference between cartilaginous and bony fish?

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

Is a hagfish a cartilaginous fish?

Hagfishes have a cartilaginous skull, as well as a fibrous and cartilaginous skeleton, but the major supportive structure is the notochord that runs the length of the body.

Are sexes separate in Osteichthyes?

Sexual maturity means that they are capable of producing offspring. Through this process, most Osteichthyes develop into either males or females. There are some hermaphroditic Osteichthyes, meaning they have both male and female sex organs, but they do not make up the majority of this class.

Are bony fish predators?

Predation. Depending on the species, bony fishes have a wide variety of predators, including other fishes, birds, reptiles, amphibians, mammals (including humans), and various invertebrates. Small bony fishes may have a large variety of predators. Large bony fishes have fewer predators.

How do class Osteichthyes breathe?

Class - Osteichthyes

Like all fishes, Osteichthyes are cold-blooded vertebrates that breathe through gills and use fins for swimming. Bony fishes share several distinguishing features: a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils.