不同鱼卵的孵化方法及罗非鱼繁殖

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1、不同鱼卵的孵化方法Hatchingmethodsofdifferentfisheggs一、常见鱼卵的类型commontypesoffisheggs1、浮性卵floatingeggs卵的比重小于水，漂浮于水面或悬浮于水层中，大多无色透明。gravityofeggsislessthanwater,soeggscanfloatonthesurfaceofwaterorsuspendinwater.Mostofthemappearcolorlessandtransparent.大多数海水鱼类属此，有少数淡水鱼类

2、如鳜鱼卵。mostofmarinefisheggsandfewkindsoffreshwaterfisheggs,suchasmandarinfisheggs,belongtofloatingeggs.2、粘性卵：卵重于水，卵膜有粘性，附着在水草、石砾或其他物体上。少数海水鱼类，多数淡水鱼类。adhesiveeggs:gravityofeggsisheavierthanwater.Adhesiveeggscansickonwaterweeds,pebbleandothersubstancesbecaus

3、eofitsstickyeggmembrane.EggsofMostkindsoffreshwaterfishspeciesandfewmarinewaterfishspeciesbelongtoadhesiveeggs.suchascatfishandmirrorcarp.如胡子鲶，镜鲤都是3、沉性卵：沉于水底的沙砾中。Sinkingeggs:sinkingeggscansinkintogritatthebottomofponds.Suchashusodauricus,sturgeon,trout,l

4、oachandsoon.如鳇、鲟、鲑鳟及鳅科鱼类4、漂流性卵（半浮性卵）：随水流漂流，静止时沉于水底。Driftingeggs(semifloatingeggs):driftingeggscandriftwithcurrentofflowingwaterandsinkdowntothebottomofpondsinstaticwaterbody.SuchasChinesegrasscarp,silvercarp.如中国的草鱼，花鲢，白鲢都是。二、不同鱼卵的孵化方法hatchingmethodsofdif

5、ferentfisheggs1、浮性卵floatingeggs这种卵的孵化，只要保证水质，温度，溶氧在不同的容器内都可以孵化。可以利用漂流性卵（半浮性卵）的孵化设备。AslongasWeguaranteeproperwaterquality,watertemperatureanddissolvedoxygen.Floatingeggscanbehatchedoutindifferentcontainers.Wecanevenmakeuseofincubatorfordriftingeggs.2、粘性卵

6、adhesiveeggs有两种孵化模式twotypesofhatchingmode1）粘附孵化stickinghatching2）脱粘孵化debondinghatching3、沉性卵：sinkingeggs流水孵化flowingwaterhatching4、漂流性卵（半浮性卵）driftingeggs专用的孵化桶或孵化环道Specializedhatchingbucketorringhatchingpool