How do you tell the difference between a bowfin and a snakehead?

Do fish have scales on their skin?

Fish have scales on their skin, which are colourful. These colors vary among species, and sometimes with the sex. Their lateral line is a sensory organ, on which the number of scales vary among species. However, fish provide the healthiest proteins for human without disease agents.

What is an example of a cichlid fish?

Examples of cichlid fish include tilapia, angelfish, oscars, and discus. Watch for seasonal bumps on goldfish to identify a male. During the springtime, look at the forehead, gills, and pectoral fins of your fish.

How many layers of skin do fish have?

Skin and scales of fishes. Fish have two layers of skin. The epidermis, which is the outer layer, secretes mucus like substances that protects the fish’s skin from bacteria and fungi. The dermis forms the inner layer of its skin and is made of a tough bony material.

What fish do not have scales on their skin?

The following fishes don’t have scales: Clingfish, catfish, and sharks among others. They have layers of material that are over the top of their skin instead of having scales. They may also have bony plates, which are covered by a layer of material or tiny, tooth-like protrusions. What are the 4 types of fish scales?

What is the meaning of cichlid?

Definition of cichlid : any of a family (Cichlidae) of mostly tropical spiny-finned usually freshwater fishes including several kept in tropical aquariums Other Words from cichlid Example Sentences Learn More About cichlid Other Words from cichlid

Are cichlids an example of adaptive radiation?

Cichlids represent striking example of fish adaptive radiation, the phenomenon whereby a single phylogenetic lineage diversifies into many ecologically varied species in a short time, especially, in eastern African great lakes (Kocher, 2004, Dunz & Schliewen, 2013).

Do fish have a cosminelike layer?

Under this is a cosminelike layer and then a vascular bony layer. The thin, translucent bony scales of modern fishes, called cycloid and ctenoid (the latter distinguished by serrations at the edges), lack enameloid and dentine layers. Skin has several other functions in fishes.

What is the size of a smooth trunkfish?

Description. The smooth trunkfish has an angular body sheathed in plate-like scales, growing to a maximum length of 47 centimetres (19 in), though 20 cm (8 in) is a more normal size. The Smooth Trunkfish is the most difficult fish to catch in the Atlantic Ocean. The body is enclosed in a bony.

What are the different types of trunkfishes?

Some of the most common species of trunkfishes seen in the aquarium trade include the following: 1 Spotted Trunkfishes (Lactophrys bicaudalis) 2 Buffalo Trunkfishes ( Lactophrys trigonus) 3 Smooth Trunkfishes ( Lactophrys triqueter) 4 Bluetail Trunkfishes ( Ostracion cyanurus) 5 Roughskin Trunkfishes ( Ostracion trachys)

What are some examples of adaptive radiation in animals?

Adaptive radiation is also seen in the cichlid fishes of Lake Malawi in Tanzania. These Malawi cichlids are descendants of Tanganyikan ancestors that presently live in Lake Tanganyika of East Africa. It is believed that may be around more than 3.4 billion years ago the Tanganyikan ancestors have somehow reached Lake Malawi in Tanzania.

When does adaptive radiation occur?

Adaptive radiation usually occurs when the ancestral population of a species gets new exploitable resources.

What is the function of the epidermis of a fish?

The epidermis, which is the outer layer, secretes mucus like substances that protects the fish’s skin from bacteria and fungi. The dermis forms the inner layer of its skin and is made of a tough bony material. Go with your mother to the fish market and closely observe how each fish’s scales are different from the other.

What is the skin of a fish made of?

The skin. Primitive bony fishes had thick scales of either the ganoid or the cosmoid type. Cosmoid scales have a hard, enamel-like outer layer, an inner layer of cosmine (a form of dentine), and then a layer of vascular bone (isopedine). In ganoid scales the hard outer layer is different chemically and is called ganoin.

What are the two layers of muscle in a fish?

It is constructed of two layers of non-striated muscle, one of which is longitudinal and the other circular. Strangely in some species of fish the longitudinal muscle is the inner layer, while in others the circular muscle is the inner layer. With so many species generalisations only apply to the majority, there are always exceptions.

What is another name for a trunkfish?

Also known as Cowfish, Spotted Trunkfish, Trunkfish. Found singly or in small schools, foraging for food over sandy areas of coral reefs. They feed on benthic invertebrates.

What does a trunkfish eat?

Also known as Cowfishes, Spotted Trunkfish, Trunkfishes. Found singly or in small schools swimming above corals and sandy areas of coral reefs. They feed on algae, crustaceans, small invertebrates, molluscs, sea cucumbers, sea urchins, seaweed, sponges, starfish, tunicates and worms.

What is the difference between Puffer Fish and boxfish?

Most species grow to 20 to 50cm in length, but the stellate pufferfish can grow to up to 120cm. Boxfish have a more limited capacity to inflate themselves (only 20 to 30% of their volume), but have a very compact body, and can also release toxins in the event of aggression. They are a small family of around thirty species found in warm seas.

What kind of fish is a boxfish?

Boxfish, also called trunkfish or cowfish, are a small group of shallow-water, marine fish in the family Ostraciidae (order Tetraodontiformes). The family is comprised of 11 genera, including Lactoria, Ostracion, and Tetrosomus and is closely related to the poisonous puffer fish of the family Tetraodontidae.

How big do trunkfishes get?

Most trunkfishes grow to an average length between 8 and 20 inches, though they tend to be smaller in captivity than in the wild. Trunkfishes generally do not tolerate other fish from the same family in their territory but they can be kept with non-aggressive species of similar size, as long as they are not aggressive feeders.

What makes a trunkfish unique from other fish?

What makes trunkfish unique is the fact that they secrete a poisonous material from their skin which acts as a chemical defense mechanism against predators. Trunkfish secrete a poisonous material from their skin which acts as a chemical defense mechanism against predators.