SPS Disease Pics Wanted
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viper_930
Active Member
Rapid tissue necrosis (RTN) or slow tissue necrosis (STN) are somewhat common ailments in aquariums. There's no scientific reason for their occurance, but have definitely been linked to stress and are mildly contagious. The tissue of the SPS coral would basically just melt away off the skeleton. RTN could kill an entire colony in 1-3 days, but STN might take weeks to months or more. Glueing over the affected parts or fragging them off would stop the spread, and an iodine dip would also help.
Photo credit to the Reef HQ Aquarium.
Photo credit to the Reef HQ Aquarium.
viper_930
Active Member
Montipora-Eating Nudibranchs
These little buggers range from 1-5 mm in lenght and feed solely on montipora species, but have also been found to colonize on acros. They are mostly found on the underside of the monti at night. Eggs are also laid on the bottom, and the juveniles immediately begin to feed once born. Adult nudibranchs would venture off the host monti to attack and colonize others around the tank.
Some people have had luck with lightly brushing the infected corals in a bucket at night with a soft-bristled toothbrush. I have found that to remove too much of the coral's tissue, so I discontinued this. Instead, I used Lugol's iodine diluted in tank water and dipped each monti in the solution for 3 minutes, then repeat this one more time two days later. After that the nudis were gone. Six-line wrasse, mystery wrasse, and also yellow coris wrasse (not banana wrasse) have been reported to feed on these nudis, but it's really a hit-or-miss.
First photo is mine. Photos 2-5 creditted to Tracy Gray.
These little buggers range from 1-5 mm in lenght and feed solely on montipora species, but have also been found to colonize on acros. They are mostly found on the underside of the monti at night. Eggs are also laid on the bottom, and the juveniles immediately begin to feed once born. Adult nudibranchs would venture off the host monti to attack and colonize others around the tank.
Some people have had luck with lightly brushing the infected corals in a bucket at night with a soft-bristled toothbrush. I have found that to remove too much of the coral's tissue, so I discontinued this. Instead, I used Lugol's iodine diluted in tank water and dipped each monti in the solution for 3 minutes, then repeat this one more time two days later. After that the nudis were gone. Six-line wrasse, mystery wrasse, and also yellow coris wrasse (not banana wrasse) have been reported to feed on these nudis, but it's really a hit-or-miss.
First photo is mine. Photos 2-5 creditted to Tracy Gray.
