CATDOLL : CATDOLL: How to keep goldfish alive

1. How to keep goldfish alive

When raising goldfish, just remember the following simple questions.

1. In addition to eating artificial baits, they also prefer to eat red worms, thread snakes, springtails, etc. Make sure the bait is fresh and do not feed it if it is rotten or spoiled.

2. Feed once a day at a fixed time. Goldfish do not know when they are hungry or full, so feed them until they are 80% full each time, and it is best to finish the food within five minutes. This will allow the fish to grow healthily and keep the water fresh for a long time. If you think feeding once is not enough, you can also feed twice, or take the form of feeding small meals more often, feed them until they are 50% full each time, and feed them once in the morning and evening.

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3. Goldfish are cold-blooded animals, so they are not afraid of cold. They can grow faster when the water temperature is 20 degrees, and the lowest temperature cannot be lower than 5 degrees. But since you keep them indoors, I believe the temperature should not be very low. Generally, they will be fine if the water does not freeze. But try to keep the water temperature constant. If it is hot and cold, it will definitely catch a cold.

4. Do not use tap water directly to change the water for fish, as tap water contains too much chlorine. You can use tap water after it is drained for three days (called trapped water).

5. If there is no filter, you need to suck out the fish feces on time every day, and then add the same amount of trapped water as sucked out. In this way, only a little water is changed, and the water can be kept clean and oxygenated. Do a large amount of water change once a week (or when you see the water is turbid), that is, 3/1 water change is enough. Put the trapped water next to the fish tank a few hours in advance before changing the water, so as to ensure that the new water to be replaced is kept at the same temperature as the water in the fish tank, and the fish will not be stimulated.

2. How to raise goldfish

Water Skills

1. First clean the transparent fish tank (other containers are also OK, but make sure they are transparent)

2. Use soda water. If you don't have soda water, you can use cold boiled water instead. But remember not to use tap water, because tap water contains disinfected chlorine, which goldfish cannot eat.

3. Add as much water as possible to ensure good oxygen content and sufficient freedom for the fish. It is best to buy a small air pump specifically for fish farming.

Breeding tips

1. If there is no condition to maintain the water temperature in the fish tank, you should always give the goldfish enough sunlight in this cold winter.

2. Put some white rice stones and some water plants in the fish tank, but remember that the water plants must be appropriate.

3. For feeding, you can feed some fish worms or white flour buns, but feed less and feed frequently each time.

Also, please note that goldfish are particularly susceptible to white spot disease (a parasitic disease). If you find such things on the fish or scales fall off and there are wounds, remember to go to the flower and bird market to buy a kind of "yellow powder" (mainly for anti-inflammatory), and then drop some methylene blue medicine (mainly for parasite removal) when changing the water for the fish. With your careful care, the goldfish will definitely bring you equal happiness.

Feeding method

First, prepare the fish tank and dry the water in advance. If you want to lay sand and plant grass, you need to add water slowly after everything is ready. It takes about one or two days to dry the water. Then put the plastic bag containing the goldfish and the "old water" into the aquarium, so that it hangs in the middle and upper layers of the water body. After about half an hour, it is estimated that the water temperature in the plastic bag is close to that in the aquarium. At the same time, add 1 teaspoon of salt to the water to sterilize it. Wait for the fish to adapt to the aquarium for 1-2 days before feeding. If you need to increase the stocking amount, you should first place the new fish in another container and raise them alone for 7-10 days. After observing that the fish are indeed disease-free, put them together with the fish in the original aquarium to avoid bringing in pathogens.

3. Feeding method

Goldfish are usually fed with artificial and natural baits. Feeding must be done at a strict time and quantity to keep the water fresh. Generally speaking, feeding should be done 1-2 times a day, once in the morning and once in the evening. It is better to feed once in the evening in the morning rather than late. In addition, the time, frequency and quantity of feeding should also be determined according to the following principles:

(1) When the weather is clear, the sun is warm and the wind is gentle, there is sufficient dissolved oxygen in the water and the water temperature is suitable, you can add more bait.

(2) When the water is clear and the fish have a strong appetite, you can add more bait.

(3) If the fish is sick or the species is delicate and precious, you should use less coarse bait and more fine bait instead.

To tell whether the goldfish is hungry or full and how well it is digesting and absorbing food, you can tell by the color of its excrement. If the excrement is green, brown or black, it means the fish is eating properly and absorbing food well. If the excrement is white, it means the fish is overfed.

1. To raise goldfish indoors, you must first solve the lighting problem:

Because the beauty of goldfish lies not only in its shape but also in its color. To ensure the bright color, the fish body must be exposed to strong light, otherwise, the fish body color will become increasingly dim and it is easy to get sick. Therefore, the place where goldfish are fed should have sufficient light, preferably ultraviolet light.

If the temperature is suitable, you can place the fish tank on a balcony or in front of a window during the day to ensure sufficient light. Therefore, if you master the temperature suitable for the growth of goldfish and ensure sufficient light, raising goldfish indoors will have a great guarantee.

2. Master the time and method of feeding:

Make sure that the fish are finished eating within 1-2 hours of feeding. Do not feed too much. Feeding time: Feed the fish around 7 am in spring and summer, when the sun starts to shine on the fish tank. Feed the fish around 8 am in late autumn and winter. Feed the fish at 9-10 am in severe cold. Remember, do not feed a large amount of food in the evening. Even if the goldfish is obviously looking for food, you can only feed a small amount around 3 pm. In addition, the fish species such as bubble eyes and Chaotianlong have poor foraging activity. Try to take care of them and feed them some live fish worms.

3. Pay attention to the amount of fish you eat:

For fish with high activity and strong vitality, you can feed more food. Otherwise, feed less food. You can use trial feeding to determine. Feed less food for the first time. If the goldfish finishes eating in half an hour and is still looking for food, it means that the feeding is too little. You can add more food the next day. If the goldfish finishes eating in 1-2 hours and does not look for food or "float", it means that the feeding is just right. If the goldfish cannot finish eating in 3 hours and "floats", it means that the feeding is too much. Note that the appetite of goldfish is a little hungry, and fresh food is good for the health of goldfish.

3. What creatures are there in the deep sea?

Deep-sea organisms can be divided into three categories according to their lifestyle: planktonic, swimming and benthic.

Plankton

It is composed of some species of bacteria, protozoa, coelenterates, crustaceans, chaetognaths, etc.

and the number of organisms are relatively small. The number of organisms usually decreases significantly with increasing water depth. The mass of medium-sized plankton in the Kuril Islands-Kamchatka waters of the Pacific Ocean exceeds 100 mg per cubic meter at a depth of 200 to 400 meters, but is less than 1 mg below 3,000 meters. The same kind of zooplankton mostly lives in shallow waters when they are small, and lives in deep waters when they are larger. For example, some species of the copepod genera Daphnia and Daphnia pulex can reach a maximum size of 17 mm at a depth of 2,000 meters, and as the water depth becomes shallower, the individual size also decreases. Deep-sea zooplankton are mostly omnivorous or carnivorous. The vertical movement of zooplankton plays an active role in the vertical transfer of nutrients. The main types of zooplankton are: ① Copepods

Crustaceans, the most important of which are some species of copepods such as Daphnia pulex, Daphnia pulex, Daphnia pulex, Daphnia pulex, etc. (the largest individual can reach 17 mm). Then there are mysids, krill, amphipods and decapods, as well as animals of the class Ostracoda. ② Coelenterates, including scyphozoans and siphonophores. They do not have a polyp stage in their life history. Individuals are generally large, up to 25 cm in diameter, mostly chestnut and purple, and can glow. ③ Olive green cells, cells with a length of 10 to 15 microns. Some scholars believe that they belong to flagellates. At a depth of 3,000 to 4,000 meters, the density of such cells can still reach 25,000 to 50,000 per liter. They can also often be picked up in the intestines of some planktonic crustaceans, and their origin is still unclear.

Swimming creatures

The main species are fish, followed by squid, octopus and shrimp. Among the more than 1,000 species of ocean fish, about 150 live in deep water.

There are many species in the deep sea. Among them, the most species belong to the suborder Angularia, with about 80 species. There is a handle-like protrusion on the dorsal side of the head of the deep-sea anglerfish, the top of which can emit light and is used as bait and lighting. The mouth is large. The female fish can weigh up to 6 to 8 kilograms, while the male fish weighs only a few grams. The male fish's head drills into the female fish's epidermis to absorb nutrients and forms a small crack. During the female fish's spawning period, the male fish produces sperm in a bag for fertilization. Anglerfish do not live in groups, and individuals maintain a distance of about 30 meters. There are also many eels in the deep sea, such as the Hastelloy sac-throated fish and the wide-throated fish. The fish body is slender and the mouth is particularly large. Some eel larvae swim to shallower water layers and return to deep water when they become adults. Among deep-sea fish, the genus Cynomorium has the largest number of individuals. The fish are small, only 5 to 6 cm long, with a large head and dark brown color. Its gills can filter zooplankton. They do not live in groups, but swallow eels individually.

The distance between the bodies is about 3 meters. There are many species of fish near the bottom of the deep sea, and the individuals are also larger. For example, the sleeping shark can reach 7 meters in length and lives by predation. Some deep-sea fish can often swallow food larger than themselves. There are fewer species of deep-sea cephalopods. Some octopuses are adapted to deep-sea life and have no eyes.

Benthic organisms

The biomass of deep-sea benthic organisms decreases with water depth. There are many benthic species at a depth of 2,000 to 3,000 meters. As the water depth increases, its composition also changes, and shallow-water species are gradually replaced by deep-water species. Usually 200, 3,000 and 6,000 meters are turning points. In the abyss of more than 10,000 meters, there are still benthic organisms. The species that have been discovered include: foraminifera, anemones, polychaetes, isopods, amphipods, bivalves and sea cucumbers. ① Micro-benthic organisms, with individual sizes between 2 and 40 microns, mainly live on the surface of seabed sediments. Including fungi, mutable bacteria, yeast-like cells, Sarcopoda, Sucker class, Ciliate class, Foraminifera, etc. According to a survey at a depth of 5,498 meters in the central North Pacific, the number of individuals on the surface of the sediment is about 24,000 per square centimeter, while in a 0.5 cm sediment sample it is only 1,150 per square centimeter. Benthic organisms

② Small benthic organisms, with individual sizes ranging from 42 to 1000 microns, live in the same waters, and their number is about 3 orders of magnitude less than that of microbenthic organisms. Small benthic organisms mainly include foraminifera, hydras, turbellarians, nematodes, gastrotrichum, zoostomata, tardigrades, oligochaetes, protochaetes, sea mites, ostracods and some species of the order Daphnia. Among them, nematodes are the main species, with a large number of individuals, accounting for about half of the total number of animals. ③ Large benthic organisms, with individual sizes exceeding 1000 microns, include most phyla of invertebrates, such as sponges, coelenterates, star worms, tracing branchia, enterobranchiate, slugs, annelids, mollusks, arthropods, echinoderms and brachiopods, as well as a small number of chordates (such as ascidians) and benthic fish. Deep-sea sponges are large (up to 1 meter) and often have a long handle inserted into the bottom mud. Sea anemones can live in the abyss of up to 10,000 meters. Some of them are attached to other animals or build tubes to live. Polychaetes are important benthic organisms in both shallow and deep waters. There are a total of 8 large benthic organisms collected in the deep sea of ​​the western central Pacific Ocean, including 4 polychaetes, namely, the snout sandworm, the sea pupa, and one each of the microcephala and the shrimp family; the remaining 4 species are beautiful crown leaf corals, bone-margin walnut clams, scallops and an animal of the suborder of hook shrimp. Each class of the phylum Echinodermata has deep-sea species, most of which are benthic feeders. Some starfish are carnivores, preying on foraminifera, polychaetes and mollusks. In places where organic matter is abundant, sea cucumbers are often the dominant species, and the individuals are also large (some can reach 0.5 meters). Some sea cucumbers living in the deep sea have leaf-shaped "feet" or a row of lateral nipples, which are suitable for crawling on soft mud. Deep-sea sea squirts also live a sessile life, have long handles, filter feed, and do not form groups. Some bottom-dwelling fish have rod-shaped pelvic and caudal fins that can support their bodies on the mud or move slowly, such as a deep-sea dogfish. Deep-sea hydrothermal vent communities In 1977, the "Alvin" diving ball of the Woods Hole Marine Biological Laboratory in the United States discovered deep-sea hydrothermal vent communities in a fracture zone 300 kilometers northeast of the Galapagos Islands in the Pacific Ocean at a depth of 2,550 meters. The seabed water temperature in this area is about 20°C. There are many organisms, including segments, crustaceans, mollusks, baleen animals and fish. Among them, large tube-dwelling worm-like baleen animals have tubes up to 5 meters long and 4 centimeters in diameter. They often form clusters and have a density of up to 15 kilograms per square meter; large clam shells are up to 25 centimeters long; there are also coelenterates, crustaceans and fish. In 1984, similar communities were discovered on the seabed 3,200 meters below the Atlantic Ocean. The organisms in these communities grow fast. For example, the metabolic rate of clams is about 500 times faster than that of ordinary deep-sea clams, and the time required to grow into adults is dozens of times faster. The hot water erupting from the seafloor contains a large amount of sulfur (HS-concentration exceeds 1 mmol/L). These animals not only have the ability to assimilate sulfur themselves, but they can also rely on the chemosynthesis of symbiotic sulfur bacteria to convert sulfur into organic matter: