CATDOLL : CATDOLL: Are water sprites harmful to fish? Are starfish harmful to fish?

1. Are water elves harmful to fish?

Are you talking about the water fairy?

If so, the water fairy is only suitable for small fish or breeding fry. Its function is to filter and increase oxygen. It uses airflow as a driving force to drive water for microcirculation and increase oxygen at the same time. It is harmless, but if the water body is large or the fish is large, its filtering effect is too small and it can only increase oxygen.

2. Are starfish harmful to fish?

Starfish can eat fish excrement and reduce pollution to seawater, so they are beneficial rather than harmful to fish.

3. Is laundry detergent harmful to fish?

If you are pond farming, then for a large pond, a little bit should not do any harm.

Too much can be harmful! After all, the water's purification capacity is limited.

4. Is the chlorine in tap water harmful to fish?

Chlorine in tap water is harmful to fish. However, this harm can be avoided. Generally, chlorine or chloride is used to disinfect tap water, and the final water body often contains a certain amount of chlorine molecules. Chlorine molecules are toxic, so tap water cannot be used to raise fish directly. However, chlorine and water will gradually decompose under the action of sunlight to produce oxygen and hydrochloric acid, which is harmless to fish. Therefore, it is recommended that the water for fish farming should be tap water that has been left in the sun.

5. Is Dimethoate harmful to crayfish?

Harmful, and can have adverse effects on crayfish growth at sufficient concentrations.

Dimethoate is a contact and stomach poison insecticide, with systemic properties and ovicidal effects. The concentration for poisoning humans and animals is 25% aqueous solution, 0.2 kg/667 m2, sprayed with 750-900 kg of water, and has good effects on Lepidoptera larvae, thrips, etc. Dimethoate is a broad-spectrum contact and stomach toxic insecticide, and has certain systemic and fumigation effects. The concentration for poisoning humans and animals is 50%. Wettable powder is sprayed at 1500-2000 times, and has good effects on preventing and controlling leaf rollers, leaf moths, leaf miners, spur moths, borer larvae, aphids, leafhoppers, spider mites, thrips, etc. Imidacloprid is a broad-spectrum, systemic insecticide with stomach poison and contact effects and a long lasting effect.

6. Is the Mida Snail Killer Granules harmful to crayfish?

Whether Mida Snail Killing Granules are harmful to crayfish has not been confirmed by corresponding scientific concepts. However, scientific tests have shown that Mida Snail Killing Granules are very effective in preventing and controlling mollusks, such as snails, slugs, golden apple snails and other mollusks. This product is a new special molluscicide that uses its own attractant to lure snails and other mollusks to eat it. The product destroys the cells of the molluscs in the body of the molluscs, thereby killing the molluscs.

7. How to classify fish?

Although fish are the lowest vertebrates, they have skeletons, muscles, digestion, circulation, respiration, excretion, reproduction, nerve sensation and other fairly complete organ systems, and can carry out extremely diverse life activities. In addition to being related to system development, their morphological structure also reflects their adaptability to the aquatic environment. The external morphology of the spindle-shaped fish is also called the basic type. It is the body shape of general fish, suitable for swimming in water. The whole body is spindle-shaped and slightly flat. Among the three body axes, the head-tail axis is the longest, the dorsal-abdominal axis is the second, and the left-right axis is the shortest, making the whole body streamlined or slightly flattened, which is conducive to reducing resistance when moving forward in the water. Therefore, this type of fish is good at swimming. They often live in the middle and upper layers of water. They can migrate long distances. Such as carp, grass carp, shark, and fish. The laterally flattened type of fish has the shortest left-right axis among the three body axes of this type of fish. The ratio of the head-tail axis and the dorsal-abdominal axis is not much different, forming a flat shape that is symmetrical on both sides, making the whole body appear flat and wide. Therefore, the swimming ability is worse than that of the spindle type, and they live in the middle and lower layers of water. They rarely migrate long distances. Such as pomfret, butterfly fish, bream, mullet, swallow fish, etc. Flat-type fish: Among the three body axes of this type of fish, the left-right axis is particularly long, and the dorsal-ventral axis is very short, making the body flat from top to bottom, slow in movement, not as flexible as the first two types, and mostly bottom-dwelling. Such as stingrays, skates, anglerfish and catfish, etc. Stick-type is also called eel-type. The head-tail axis of this type of fish is particularly long, while the left-right axis and the ventral axis are almost equal and very short, making the whole body stick-shaped. Its swimming ability is stronger than that of the flat-type and flat-type. It is suitable for living in caves in the bottom mud and in the bottom sand and gravel. Such as yellow eel, eel and many types of conger eels. In addition, some fish have special body shapes due to their adaptation to special living environments and lifestyles, such as seahorses, pipefish, sunfish, river fish, flounder, boxfish, etc. No matter what kind of body shape the fish is, it can be divided into three parts: head, trunk and tail. The lack of a neck is a characteristic of fish. The head and trunk are connected and fixed, which is one of the differences between fish and terrestrial vertebrates. The dividing line between the head and trunk is the rear edge of the gill cover (bony fish) or the last pair of gill slits (cartilaginous fish). The trunk and tail are generally divided by the rear edge of the anus or the starting point of the anal fin. To be more precise, it is the end of the body cavity or the first caudal vertebra.

8. Is it harmful to use growth hormone on fish?

Growth hormone is a type of hormone secreted by the hypothalamus that promotes growth. Too much hormone is not conducive to growth. If it is used for fish breeding, it is not recommended to add hormone substances. You can improve the breeding type and culture conditions, and you can also get good breeding results.

9. What fish species are best to raise crayfish together with?

Crayfish can be mixed with a variety of fish, such as perch, carp, crucian carp, grass carp, etc. Mixed breeding can improve the survival ability of crayfish, increase the variety and quantity of food they consume, and also enrich the landscape of the fish tank. However, attention should be paid to the nutritional balance between different fish and water quality control to avoid unnecessary pollution.

10. What is the impact of cigarette ash on fish?

If used properly, cigarette ash can relieve itching, deodorize, and cleanse. Cigarette ash is also plant ash. The ash produced by cigarettes can effectively kill fungi on the surface of the skin and keep the skin surface dry. As for the effect on fish, I really don't know. But it can be assumed that my personal opinion is that a small amount of cigarette ash in the water has no effect on fish. As for a large amount of ash in the water, I don't know because there is no record of such an experiment, but what is certain is that a large amount of cigarette ash will definitely affect the water body. Fish may find it difficult to adapt.