-
Identification and Control Methods for Fish Lice (Argulus sp.)
Signs of Infection Fish lice are disc-shaped parasites, 8 to 12 mm in diameter, and come in various colors, from light green to brown. They can be seen attached to the fish's body and fins. Fish Affected Fish lice can infest many species of coldwater fish. They are almost impossible to find on tropical species unless the parasites are brought into the aquarium on live food or plants. Even then, fish lice cannot survive for long in warm water. Details of Infection These parasitic crustaceans have eight feathery legs,
-
Comprehensive Utilization Methods of Fish Fingerling Ponds During the Winter Fallow Period
Raising market-size fish: Using winter-fallow fingerling ponds to raise one season of market-size fish can both increase production and help ease the "summer shortage" in the aquatic product market. Because the rearing period is relatively short and temperatures are relatively low, the following techniques should be adopted: 1. Stock early, that is, stock immediately after the fingerlings are combined into ponds, so as to make full use of the growing period. Stocking rate is calculated at a maximum water depth of 2 m, generally 125-150 kg per mu. The stocking ratio is generally about 40% silver carp, about 10% bighead carp, about 30% grass carp and bream, and about 20% black carp and common carp.
-
The automatic fish feed dispenser is a great helper for feeding in fish ponds
The automatic fish feed dispenser is mainly composed of a frame assembly, an electronic control system, a feed-throwing device and other mechanisms. Build a support in the fish pond (bamboo or wood materials are both acceptable), with the top of the support 1-2 m above the water surface and the support about 5 m from the shore, then fix the feeder on the support with the feeding port facing the center of the fish pond. When feeding, pour the fish feed into the feed box, turn on the power, the motor starts to rotate, and the feeder enters its working state; the fish feed falls through the discharge pipe into the throwing system and is thrown evenly from the throwing port, scattering into the fish pond. This feeder is suitable for extruded feed and hard pellet feed
-
There's an art to winter pond fish harvesting, and mastering the method is key
Winter is a favorable time for harvesting and marketing pond fish, but winter harvesting is also a potential trigger for fish diseases the following year. Therefore, extra care must be taken during winter harvesting to avoid injuring the fish as much as possible, so as to reduce the occurrence of fish diseases and improve the economic returns of the pond. 1. Clear debris from the pond before harvesting. Wooden stakes set up in the pond for theft prevention, uncleared large rocks, and aquatic plants on the water surface such as water hyacinth and alligator weed can all interfere with normal seining. To carry out winter harvesting smoothly and safely, these must be cleared before harvesting
-
What do snakehead fish eat? Understanding the diet of snakehead fish in one article
The snakehead fish is a fierce carnivorous fish. It does not chase its prey to feed, but instead uses a "wait-and-see" ambush method. It usually hides among aquatic plants, and once "prey" approaches, it suddenly attacks and captures it. Its main food is crucian carp,
-
What are the comprehensive prevention and control measures for hemorrhagic disease of farmed fish?
I. Affected species: grass carp, crucian carp, mud carp, common carp, and even silver carp. II. Symptoms: punctate or patchy hemorrhages on the head, orbit, fin base, and abdomen of the fish body, gill filaments bleeding or pale, sometimes ascites, and rotting at the ends of fin rays. III. Causes: 1. Fish diseases caused by bacteria are mostly caused by conditional pathogenic bacteria, and will not occur before the water environment has deteriorated. Only when various factors in the substrate and water body become unsuitable for the survival of fish, reducing the fish body's resistance, and at the same time water
-
What kind of fish is bigeye tuna? A comprehensive guide
Bigeye tuna (BigeyeTuna), also known as stout tuna and obscure tuna, has a body length of about 1.5-2.0 m, with large individuals weighing over 100 kg, and generally 16-35 kg. The back is blue-green, and the sides and belly are silvery white. The flesh is pink and slightly soft. The pectoral fins are long, with very prominent tips reaching below the second dorsal fin; the second dorsal fin is also relatively narrow, similar in height to the first dorsal fin. The body is gray, plump, with a short tail and a noticeably larger head and eyes. Habitat depth of bigeye tuna
-
How to make delicious baileng mushroom fish fillets? Detailed recipe shared
Ingredients: 1800 g snakehead fish, 250 g white baileng mushroom. Auxiliary ingredients: 400 g celtuce, 2 fresh pointed red chilies, 2 g refined salt, 3 g mushroom essence, 1 g pepper powder, 100 g yellow wine, 200 g dry cornstarch, 1 egg, 10 g dark soy sauce, 50 g abalone sauce, 25 g seafood sauce, 5 g tomato ketchup, 200 g chicken stock, 50 g white sugar, 20 g wet cornstarch, 500 g refined oil, 100 g chicken oil, 5 g minced garlic, 5 g sesame oil. Method: 1. Slaughter the snakehead fish, remove the guts
-
Processing Methods and Technical Key Points for Freshwater Fish Sausage
1. Raw material pre-treatment: Fresh fish after catching should be sent quickly to the processing plant, and fish with off odors or spoilage should be removed. After gutting and beheading the fresh fish, rinse away blood and dirt with clean water. If it cannot be processed in time, the fish chunks should be quick-frozen and stored at minus 18 degrees Celsius for later use. For thawing frozen fish, running water thawing is better. The water temperature should be controlled at around 10 degrees Celsius. 2. Meat collection: Control the meat collection rate at around 25 percent. If the meat collection rate is too low, it will affect the finished product yield and increase costs; if the meat collection rate is too high, tens of thousands of blood-red muscle [tissue will be collected],
-
Two Simple Tricks to Quickly Get Farmed Fish to Come to the Feeding Table
In recent years, with the continuous development of fish farming technology, the method of raising fish with complete granular feed has been gradually promoted and applied. However, because many fish farmers are not skilled at feeding and conditioning, the fish being trained are slow to come to the feeding table, which not only affects feed intake and delays growth, but also increases costs and affects farming efficiency. Below, we introduce two simple and easy successful conditioning methods that we have summarized in production practice for the reference of users. 1. Feed hanging-bag conditioning method: Use large-mesh window screen (with mesh fine enough not to let feed through) to make a hanging bag that can hold 1.5-2 kg of feed.
条件筛选