bangai cardinals

ctenophors rule

New member
do bangai cardinals need to be able to reach the surface?

i have an idea about how to collect the babies in the tank with both bangais least stressfully.

if an egg crate platform where put half way up on a tall aquarium, than at night the babies would float up atracted to the moon lights, and the adults would be traped below the eggcrate.

the egg crate will provide a constant overhang. the egg crate will allow enough light threw for photosynthesis in maCRO ALGAE AND SOME CORALS.

has this been done/ are thaier any major problems?

ty's in advance
 
Cteno,

I haven't noted any requirements for Bangaiis to "need to get to the surface," but there might be a glitch in the plan... In my experience, baby Banggaii have two features immediately after release that don't lend itself well to this setup.

1. Site attachment and structure relationship. The newly delivered fry seem to seek our vertical structures and stick with it. On site surveys in the wild, babies are often noted to be closely associated with solid vertical elements in the environment, things like acropora, mangrove roots, and the well-demonstrated urchin (diadema sp.). They aggregate for protection, and seem to be out of reach from any paternal predation-to any significant degree anyway.

2. Babies don't seem to seek out bright areas, and don't demonstrate positive phototropism. So in my humble opinion, they wouldn't necessarily "rise" above the egg crate to "escape" predation. I've even seen some "premature" babies that are negatively buoyant and need to be nursed along in a container until their swim bladders are effective enough to keep them neutrally buoyant.

You probably would have good luck separating the male from the female, and then include some "fake urchins" to provide structure for the newborns. you can google "fake urchins" or the like for examples.

Good luck
 
yes you will have better luck building a dummy urchin and the male will release them right by it.

or try to catch him the night before he is due to let them go
 
I would have to agree they are not likely to go up. When mine has babies they hover low. Also in the regular tank they will not likely be able to avoid the powerheads or whatever you use for flow.
 
Cteno,

I haven't noted any requirements for Bangaiis to "need to get to the surface," but there might be a glitch in the plan... In my experience, baby Banggaii have two features immediately after release that don't lend itself well to this setup.

1. Site attachment and structure relationship. The newly delivered fry seem to seek our vertical structures and stick with it. On site surveys in the wild, babies are often noted to be closely associated with solid vertical elements in the environment, things like acropora, mangrove roots, and the well-demonstrated urchin (diadema sp.). They aggregate for protection, and seem to be out of reach from any paternal predation-to any significant degree anyway.

2. Babies don't seem to seek out bright areas, and don't demonstrate positive phototropism. So in my humble opinion, they wouldn't necessarily "rise" above the egg crate to "escape" predation. I've even seen some "premature" babies that are negatively buoyant and need to be nursed along in a container until their swim bladders are effective enough to keep them neutrally buoyant.

You probably would have good luck separating the male from the female, and then include some "fake urchins" to provide structure for the newborns. you can google "fake urchins" or the like for examples.

Good luck

thanks i was under the assumption that they were photo/geo trophic and would rise to the surface after birth.

i will have a real diadema with the brood stock. the babies will have a dummy urchin
 
I would have to agree they are not likely to go up. When mine has babies they hover low. Also in the regular tank they will not likely be able to avoid the powerheads or whatever you use for flow.

thats a concern i also shared, so my flow is all airstone powered ;) with big sponge filters
 
mine have bred 3 times, the last was 17 babies, they will hang out in a group, near an aneoome.....I havent been able to feed them is my problem. last cycle I gave a bunch away

Frank
 
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