At the start of the month, we released the juvenile white-mouth moray (Gymnothorax meleagris) that had grown to a good size; we took her out to the reef, where she quickly found a new home in a burrow on the House Reef.
Algae supply remains consistent on our current successful cycle.
Artemia production is keeping up with the demands of the main tank, at 6g of cysts a day. We have ordered two new brands of cysts to test in the coming months. Due to demands from our new Fish Lab individuals we have increased our grow-out volume for adult Artemia.
We have increased our rotifer harvesting to keep up with the demands of the shrimp larvae, and after a brief dip, volumes have now increased again to satisfactory levels.
Fish Lab Protocols
The temperature in our Fish Lab has been increased to a more suitable temperature for the larvae, and a small amount of freshwater is added during water changes to control contaminants like ciliates.
We plan to trial several new protocols in the coming months.
- A bottom-draining system will circulate water within our display tanks, before flowing to the Kreisels. This will improve water quality management (it currently takes two hours to complete the larvae water changes).
- To improve known knowledge gaps, we plan to focus our research and breeding efforts on just three shrimp species (T. amboinensis, L. amboinensis, R. durbanensis). We will continue to observe and track our other species to improve protocols and for general study purposes.
Jellyfish – Aurelia aurita
This month, we installed a new UV-steriliser in the main display Kreisel cylinder, and deep-cleaned the filtration system. All jellyfish are doing well.
Zooplankton Survey Study
A new plankton net is being trialled, as part of our Zooplankton Survey, and we continue our training on sample preparation and water quality analysis, in conjunction with The Manta Trust.