Tortoise ectoparasite
Cause of the disease: aquatic turtles and terrestrial turtles are infected by parasites in the wild. The species of parasites are ticks, mites, fleas, leeches and so on.
Symptoms: there is a worm body on the surface of the tortoise, and the tortoise is thin.
Control method: remove the worm on the surface of the tortoise as soon as it is found. The newly purchased turtles were washed with 1% trichlorfon solution for 2 days. The incidence of artificially raised turtles is lower. The aquatic turtles were washed with 0.7 mg / L copper sulfate solution for 20-30 minutes, and the leeches fell off and died.
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How to release fish species in winter
1. "five changes" fish ponds. "small ponds" to "big ponds", "dead ponds" to "living ponds", "shallow ponds" to "deep ponds", "leaky ponds" to "reservoir protection ponds", "emergency ponds" to "flood control ponds". When renovating the pond, first release the dry pond water, after exposure to the sun to remove too much silt from the bottom of the pond, leaving only 15~20cm thick. Root out weeds, dredge channels, and raise the ridge of the pond. two。 Clear the pond and disinfect it. The water depth of the pond is 10cm, first of all, quicklime 90kg or 30% chlorine bleach 4kg is used for every 667m2 of water.
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Big silverfish
(silverfish) Protosalanxhyalocranius [local name] noodle fish, noodle fish, mud fish. [morphological characteristics] the individual is small, and the body length of the often mailed individual is about 15 cm. He has a slender body. The head is flat up and down. The tip of the kiss is triangular. The lower jaw is longer than the maxilla. The distance from the origin of the dorsal fin to the base of the caudal fin is greater than that to the base of the pectoral fin. Transparent body. There is a row of black pigments on each side of the ventral side. When the male is sexually mature, the anal fin is fan-shaped, with a row of scales at the base, and the pectoral fin is large and pointed. [place of origin, season] is found in both seawater and fresh water.
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