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Fish
A fish is any aquatic vertebrate animal that is typically cold-blooded, covered with scales, and equipped with two sets of paired fins and several unpaired fins.
9,777 Questions
Yes, dragonflies do have gills and a chin that can reach out like an arm and eat small fish. But grow lungs as they grow older, they are amphibians.
BONUS: THEY DO MUTATION
Why are your mollies killing everything?
Mollies are a group/schooling fish that can become restless if overcrowded by other species, or it's own, and attack, thus controlling the population of the tank. While peaceful, the molly can become aggressive and is teritorial.
Is there any food that Ospreys eat besides fish?
Ospreys feed almost entirely on fish, plucked from the water.
Most fish have swim bladders giving them buoyancy that allows them to "float" at various levels in water. While some species are surface dwellers other fish floating on the surface are deceased and float because of gases formed within their bodies due to the process of decay.
What problem caused biologists to believe amphibians evolved from certain fish?
The earliest forms of amphibians evolved from lobe-finned fish in the Devonian Period, around 350 million years ago. These fish had strong, bony fins that allowed them to drag themselves on land, and some of them developed lungs for breathing air. These two adaptations were very helpful in their freshwater environments that were often stagnant and dried out. Eventually the bony fins of these fish evolved into limbs that became better suited for terrestrial locomotion over time. Early amphibians still spent most of their lives in water and always had to lay their soft eggs in water.
One of the earliest and most well known ancestors of amphibians (and all tetrapods in general) is a lobe-finned fish called Eusthenopteron. Although it never actually went on land, it still had four fins with bone structures homologous to all modern tetrapods, and also had internal nostrils and enfolded enamel found on primitive labyrinthodont amphibians.
Another important transitional form is Tiktaalik, who is an important link in the transition between lobe-finned fish and tetrapods. By the structure of its jointed fins, which contain wrist bones, it was probably one of the first fish to crawl on land. However, it only did so under certain circumstances and still spent almost all of its time in water. It had both gills and primitive lungs, and had a flattened head shaped like that of an amphibian's.
The earliest amphibians include Acanthostega and Icthyostega. Their primitive limbs contained digits, but were still poorly adapted for moving efficiently on land. Yet it was a good start, and they would be succeeded by labyrinthodonts such as Tulerpeton and Eryops, who are the ancestors of true amphibians.
The first modern amphibians emerged in the Carboniferous Period and had all the adaptations necessary to make them suitable for living both in water and on land. Amphibians became the dominant terrestrial vertebrates through most of the Carboniferous until they are replaced by their descendants, the reptiles.
Do fish have segmented bodies?
Flies are in fact an insect that has a segmented body. Other insects with segmented bodies include ants and beetles.
The pH scale is made up of 3 parts:
- Acidic
- Basic
- Neutral
These 3 parts are represented on the scale in different points. The scale is like this:
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
A substance with pH between 1-7 is Acidic and on a universal indicator it comes up as the colour red or yellow.
7 is Neutral. A neutral is a substance like water it is neither acid or alkaline. It comes up as the colour green.
7-14 is Basic. It comes up as the colour blue or purple..
Examples:
- On the scale, if the pH is 1, it is an extremely strong acid this will be deep red.
- If it is 6, it is an extremely weak acid this will be a yellowish green.
- if it is 8, it is an extremely weak base and its light blue.
- If it is a 14, it is an extremely strong alkaline and its dark purple.
What do you call an animal who croaking of a?
Amphibians like frogs and toads make the croak sound. There are no other animals that croak.
The call of a raven might be described by many people as a croak.
If your reffering to " What are the organs of a fish?" then the answers is;
They have a liver
They have a stomach
They have an eye
they have a brain
They have gills.
And yes, gills are organs.
What is the advantage of fish laying thousands of eggs?
the advantage is that people get to eat them
also so that they dont go extinct
Why are fish important in a coral reef?
the coral reef is important to the marine life/animals because coral reef stand for shelter.food,and protector for the fish and also protect people
What does the expression plenty of fish in the sea mean?
Plenty of fish in the sea simply means that there are plenty of potential spouses, soul mates or partners in the world. Often, the phrase is used by or toward someone who has just broken up with their lover.
What is the name of fish with no scales?
Some catfish variety in regards to freshwater
Answer:
A lot of work has been done around scaleless and scaled fish to meet Kosher food guidelines. A fish must have visible scales and fins to be Kosher. Non-Kosher fish include:
- Basa (Pangasius bocourti)
- Billfishes
- Blowfish
- Burbot
- Catfishes
- Cutlassfishes
- Dogfish
- Eels
- Freshwater gars
- Freshwater Cod
- Goosefishes
- Hoki
- Lampreys
- Jacks
- Lomosuckers
- Lumpfish
- Snailfishes
- Marlin
- Monk fish
- Ocean pout
- Oilfish
- Puffers, blowfishes, swellfishes, sea squab (Sphoeroides species)
- Ray
- Rock prickleback
- Sailfish
- Sand lances, launces, or eels
- Sculpins
- Sharks, rays and their relatives
- Snake mackerels
- Sturgeons
- Swordfish
- Toadfishes
- Tiggerfishes and firefishes
- Tra
- Trunkfishes
Is the blob fish cartilaginous?
No, the blobfish is in the group of fishes known as the bony fish (superclass Osteichthyes), in the class Actinopterygii, known as the ray fish. The other class in that superclass is the class of lobe fined fishes, Sarcopterygii. The cartilaginous fishes are in the class Chondrychthyes, which diverged from the bony fish over 500 million years ago, according to S. Blair Hedges in the online book The Timetree of Life (edited by S. Blair Hedges and Dudhir Kumar).
What is the length of a flashlight fish?
Flashlight fish are found in tropical ocean waters across the world. They are typically about 14 cm (5.5 in) in size, although some species can reach twice this length. They are nocturnal, feeding at night on small crustaceans.
How do fish produce their young?
producing fishFirst of all you need a female and a male fish but its hard to tell what gender a fish is .In the rite surcomstances the female fish will lay her many eggs and afterwoods the male fish will insert his sperm into the eggs. They dont have sex.But its hard for fish to lay eggs in captivity
no, fish cannot make their own food. please feed your fish.
