Filefish have rough, non-overlapping scales with small spines, which is why they are called filefish. Some filefish appear scaleless because their scales are so small.
Other examples of scaleless fish are: Redtail catfish (Phractocephalus hemioliopterus) Zebra catfish (Brachyplatystoma juruense) Tiger soruby (Pseudoplatystoma tigrinum)
Horches. The hagfish (Myxine glutinosa) is an ancient jawless species of fish that lives at great depths and feeds on the carcasses of dead marine life.
So the correct answer is ‘Catfish‘.
Because they are a scaleless fish, catfish can be treated with Pimafix or Melafix, but should not be treated with potassium permanganate or copper-based medications. Malachite Green or Formalin can be used at half to one quarter the recommended dosage.
Fish that don’t have scales include the sticky fish, catfish and the shark family. Instead of scales, they have other layers of material over their skin. They can have plates of bone that are also covered by another layer, or tiny, tooth-like protrusions covering their skin.
Sole, swordfish, mahi mahi, grouper, whitefish, perch, all of which are virtually boneless.
Tilapia scales are surrounded by a shell of scleroblasts, which are responsible for producing the layers of collagen that make up the bulk of the scales. The scleroblasts adjacent to the lateral surface of the oldest scale region gradually atrophy.
“`Of all creatures that live in the waters of the seas and rivers, you may eat all that have fins and scales. But all creatures in the seas or rivers that have no fins and scales – be it among all the teeming things or among all the other creatures in the water – against you.
Pandas are scaleless fish and are therefore extremely sensitive to salt. Corys have hardened chest spines that can pierce human skin so they should not be handled carelessly, also these spines have a tendency to become tangled in the mesh of a net so if they need to be moved a plastic container should be used. p>
There are four types of fish scales – placoid, cycloid, ctenoid (pronounced “ten-oid”) and ganoid. Most bony fish have cycloid scales. Fish with cycloid scales have the same number of scales throughout their lives – the scales enlarge to accommodate a fish’s growth (scales lost through injury will grow back).
Tuna for example has very few scales but is still considered kosher fish. However, two additional factors serve to complicate these determinations. First, a particular species of fish may be known by five or more names, some of which are common to known kosher species.
Because they are a scaleless fish, catfish can be treated with Pimafix or Melafix, but should not be treated with potassium permanganate or copper-based medications. Malachite green or formalin can be used at half to one quarter of the recommended dosage. All medications should be used with caution.
Scaleless fish and invertebrates are unfortunately always on the substrate where the ego is first formed. This is why loaches and catfish are the most susceptible to ego infestations. Many treatments can be applied to normal fish species. The most common is raising the temperature and salting the tank.
Catfish don’t have scales; Their bodies are often naked. In some species, their mucus-covered skin is used for skin breathing, in which the fish breathes through its skin. In some catfish, the skin is covered with bony plates called scutes. Body armor of some sort appears in various forms within the Order.