CATDOLL : CATDOLL: What are the effects of cigarette ash on fish?

1. What are the effects 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.

2. What is the impact of El Niño on fish?

1. El Nino has an impact on fish. 2. El Nino refers to a climate phenomenon in which the temperature of the equatorial Pacific Ocean rises abnormally, which will cause changes in the marine environment and affect the survival and reproduction of fish. High temperatures will lead to a decrease in the number of plankton in the ocean, thereby affecting the food chain of fish and reducing the food supply of fish. In addition, El Nino will also lead to a decrease in the oxygen content in the ocean waters, which will also have an adverse effect on the breathing and growth of fish. 3. In addition, El Nino may also lead to changes in ocean currents, which will interfere with the migration and migration of fish and affect their ecological habits and reproductive behavior. Therefore, it is multifaceted, including food chains, growth, reproduction and migration.

3. What is the impact of TDS on fish reproduction?

TDS represents the water hardness index. Too low total water hardness is not conducive to fertilizing the water.

It is not conducive to the growth of farmed animals. In particular, crustaceans (crayfish, crabs, etc.) will have problems such as failure to molt, slow growth, and low molting doubling rate. Total hardness is a very important water quality indicator in aquaculture.

4. What effects do pesticides have on fish?

The toxic effects of pesticides on fish can be divided into short-term and long-term. Short-term effects include immediate avoidance, acute death, reduced activity, loss of balance and paralysis; long-term effects include chronic poisoning, slowed growth, loss of population competitiveness and changes in physiological and reproductive functions.

5. What is the impact of reservoir construction on fish?

The impact of dams on migratory fish cannot be generalized. Depending on the specific situation, it may range from a minor impact to a direct cause of extinction of a certain type or class of migratory fish.

The most direct impact of dams on migratory fish is that they block their migration channels. Some fish that swim upstream may even crash into the dams and die.

Secondly, the highly gas-saturated water discharged from turbines and dams can also harm adult fish and fry. Indirectly, the impact of dams on hydrological conditions such as water temperature and flow rate can also lead to stagnation of migratory fish reproduction.

6. What are the effects of different fish feed types on fish growth?

If it is the same series of feed, for example, from the fingerling stage to the rearing stage, and then to the adult stage, there is no problem using the same series of feed.

However, if the nutritional proportions of fish from different series or different manufacturers are generally different, it is likely to lead to nutritional deficiencies, such as vitamins, methionine, lysine, etc. The lack of these essential nutrients will cause mild cases of slow growth and decreased immunity of the fish, and severe cases will cause deficiency syndromes and developmental deformities.

7. What is the growth process of fish?

A fish goes through five stages in its life: embryonic stage, fry, seedling, young fish, sub-adult fish and adult fish. The embryonic stage is the very beginning period of the fish, which refers to the time from the fertilized egg to the hatching of adult fish. The newly hatched fish is the fry. After three to five weeks, the fry will grow into seedlings, and then go through the young fish and adult fish stages before finally growing into adult fish.

8. What are the fastest growing fish?

1. Snakehead

Snakehead fish is a common edible fish, also known as mullet, raw fish, fortune fish, snake fish, firehead fish, etc. It mainly grows in still water or micro-flowing water with dense aquatic plants and fine bottom mud. Snakehead fish is a freshwater fish variety farmed in many areas. Generally, it can reach a weight of 0.5-0.7 kg after 8-9 months of breeding. It is a fast-growing fish with high economic value.

2. Black carp

Black carp is one of the four major fish species in my country and is currently being artificially raised in many areas. Black carp mainly grows in the middle and lower waters, and the most suitable water temperature for its growth is 22-28 degrees. It mainly feeds on snails, clams, mussels, clams, shrimps and insects. It grows very fast and can grow up to about 70 kilograms.

3. Grass carp

Grass carp is also one of the four major carps and the most artificially raised fish species in my country. Grass carp mainly grows in the middle and lower layers of water and in waters with abundant aquatic plants. It is a freshwater fish that feeds on grass. Grass carp grows relatively fast, and the largest individual can reach about 40 kilograms.

4. Catfish

Everyone is familiar with catfish, and they are artificially raised in many areas. Catfish mainly live in the middle and lower layers of rivers, lakes, reservoirs, and ponds. They are a kind of freshwater fish with fast reproduction, strong survival ability, and fast growth. Many people don’t know that they can grow 6 kilograms in half a year. They are also a freshwater fish species raised in many areas.

5. Silver Carp

Silver carp, also known as silver carp, mainly lives in the upper and middle layers of water. In winter, the temperature is low, so it will hibernate in deep waters. Silver carp mainly feeds on plankton in the water. It is a typical filter-feeding fish and its growth rate is also relatively fast.

6. Bighead carp

Bighead carp is a kind of fish that many people like to eat. The chopped pepper fish head we often eat is made of bighead carp. Bighead carp mainly lives in the middle and upper layers of water, mainly feeds on plankton in the water, and grows relatively fast.

7. Wuchang Fish

Wuchang fish is a fish that is unique to my country and is produced in the middle and lower reaches of the Yangtze River. It grows fast and has strong disease resistance, making it a very easy-to-breed fish. In addition, Wuchang fish has tender meat and is particularly suitable for steaming. Steamed Wuchang fish is a traditional dish in Hubei Province and is deeply loved by people in Hubei and even the whole country.

9. What are the reasons for fish growth and reproduction?

1. Oviparous. This is the reproduction method of most fish. The fish expel the eggs from the body, and the embryos develop completely outside the body. The nutrients are provided by the eggs and have nothing to do with the mother's nutrition.

2. Ovoviviparity: The fertilized egg develops in the mother's reproductive tract, and its nutrition is provided by the yolk, which has nothing to do with the mother's nutrition.

3. Viviparity. The fertilized eggs of some fish develop in the mother's reproductive tract, and the embryos are connected to the mother's blood circulation. The development of these embryos is not only nourished by the yolk, but also related to the mother's nutrition.

Extended information: In order to breed excellent fry, you must choose healthy broodstock with excellent color, fins and size for breeding. Special care, close attention to water quality changes, live bait, or occasional feeding of fish grass can breed the best fry. Some fish have special requirements for water quality conditions when breeding. Be careful to prevent broodstock from swallowing their own eggs or fry. Fish lovers can estimate the number of fry based on the smooth spawning situation and provide enough food for the fry.

10. What are the effects of matrine pesticide on fish?

Hello, it is non-toxic to humans, livestock and birds (disability, teratogenesis and mutagenesis), non-toxic to reproduction, and has no obvious effect on fish and aquatic organisms. It has no obvious harmful effect on bees and wild organisms. The ecological environment is evaluated as environmentally friendly and is a low-toxic pesticide product with no residue. The effective period is greater than 10 days and the efficacy is greater than 90%. Matrine is mainly used in agriculture, while oxymatrine is mainly used in medicine.