I have not had the container blacked out over the past two weeks, but it is in the basement so it's dark 22 hours out of the day. I have several of them from culturing copepods a few years ago ($12 at Walmart in 2020 - currently $14.88). I'm using the 5 gallon jug pictured below. I haven't seen the shrimp actively feed or gather and pursue food - I also haven't spent much time looking. I've also added small amounts of crushed flake food and spirulina powder. I wonder how many didn't make it to the trap.įor food I'm using BBS that are less than 12 hours old with a table top hatchery. I was still able to capture about 100 larvae with the disappointing light provided with the vossen trap. Right now there are five adult peppermints in the tank (Waterbox 180.5) and I'm collecting larvae every 2-3 days. They'll bicker a little bit, but mostly live together in a colony, and since each shrimp is hermaphroditic, they can all carry fertilized eggs giving you more groups of larvae to collect. Oh, and if you want more attempts for the larvae, you can just add more adult shrimp. In my attempts, they start looking super lanky around week 3-4 - in a comical fashion - and I think when their legs get that long they may be more fragile and require gentler flow or just fewer things to run into - not 100% sure yet. I've had no success with just apocyclops, but have a few other copepods to offer which I have higher hopes for - are you using BBS? Also what's the vessel/flow look like? Glad to see more attempts! You'll probably have even more success with the trap if you can darken other room or overhead lights - the included light works but isn't super bright, and the tiny shrimps will get confused by multiple light sources or by intense light (brighter flashlights they will actually stay somewhat away from but move towards, and really bright light makes them swim in spirals). The eyes and legs are much more developed as well as the darkening of the exoskeleton. Unsure of the age as I have collected several times over the past two weeks. The trap has been in the tank with no air or light driving the larvae to the trap for the past few days, but it somehow manages to collect 40-50 of them just through the tanks flow. I believe this shrimp to be 36 hours old. With filtration and flow running continuously on the reef tank it is incredible that any of the larvae make it into the tank, but sure enough this trap can easily catch over one hundred of them in a night. ![]() Here is my Vossen trap used to catch the babies. ( I don't own this book but many of the online articles reference it.) How to Raise and Train Your Peppermint Shrimp. There are a few WAMAS threads over the past 10 years from members have had interest in breeding them but the threads that I found dried up without much success. I started by reading several posts on Reef2Reef and WAMAS. This is less of a tutorial and more so me attempting to use methods developed by others to be successful in raising peppermint shrimp from zoea (word I learned today) to adult.
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