Black dots on water surface

S

stanleyc

Active member
Joined
Apr 9, 2009
Messages
290
Reaction score
31
Points
28
Country
United States
My daphnia culture has a bit of what looks like ground black pepper on the surface of the water. What are these?
 
If the dots are about 1mm and slightly triangular, then they are ephippia (resistance eggs).
 
Yes, these are the "seed" form of the daphnia. In the future, the way to avoid this is to always harvest enough daphnia from the culture to keep their population under control. They form ephippia when their population density becomes too high.
 
You must log in or register to reply here.
General chit-chat
Help Users
  • No one is chatting at the moment.
  • Shane douglas:
    with axolotls would I basically have to keep buying and buying new axolotls to prevent inbred breeding which costs a lot of money??
     +1
    Unlike
  • Thorninmyside:
    Not necessarily but if you’re wanting to continue to grow your breeding capacity then yes. Breeding axolotls isn’t a cheap hobby nor is it a get rich quick scheme. It costs a lot of money and time and deditcation
     +1
    Unlike
  • stanleyc:
    @Thorninmyside, I Lauren chen
     +1
    Unlike
  • Clareclare:
    Would Chinese fire belly newts be more or less inclined towards an aquatic eft set up versus Japanese . I'm raising them and have abandoned the terrarium at about 5 months old and switched to the aquatic setups you describe. I'm wondering if I could do this as soon as they morph?
     +1
    Unlike
    Clareclare: Would Chinese fire belly newts be more or less inclined towards an aquatic eft set up versus... +1
    Back
    Top