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yep steve they definatley seem to have a stickiness to them, when i see em in my spawn matting they are clinging and ill pull the net away and they swim until they can settle again. itd make sense for them to have it so they save energy and dont get swished away in a stream. i thought i read they had a sticky head pad but i certainly dont see a pad of such either.,maybe they do maybe not, in a beaker theyd have nothing to stick up to as they lay but come to think of it im sure ive never noticed them attached under the net strands..hmmm last time i noticed them clinging to a plastic tank lying head up tail down they were mostly all like that but i dont know which way round, i thought it was belly against the tank at the time but didnt look close.
ive got golden perch that float upside down with a very large egg reserve.
with koi, ive found they can go 3 days after hatch without a feed, i got worried too last time about them going hungry in a clear tank and let em go in a pond but they handled for 3 days first without feeding on much.
some species of fish will look like they handled but then die a few days after..
my old boss starts feeding day one but i dont think it neccessary as most arent interested, i dont think that they are developed to begin feeding on day one anyway. no functioning swim bladder and mouth parts opening up..
i think you said once youve got plankton or scoop nets, time before last i did what youd said and ran some green (actually a brown bloom) water- siphoned it from the broods into the fry tank for a few days and after that i used a pump on a different pond into a 100 so micron screen for a few hours and fed them that, think they were coppees, sorry copepods and it lasted in the fridge for 2-3 days then it went a bit too brown and i ditched it..
they grew well with that combined with some powder for up to about 6 days old. then i let em go into a copepod pond at about 6-8mm.
still easier and less work letting them into newly blooming pond.
ive got some goldies that are getting something that seems like sap on their skin, you know the white sheen that occurs, about 800 3 cm sanke type progeny in a recirc tank. most will survive though it seems like its making a few of them gill plates warp and recede a little.
kois dont seem to get it like that, the kois always seem a bit tougher and dont suffer a die out as easy..havent pin pointed why yet either. |