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My first batch of H.erectus fry!

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  • Offline Serene_Blue
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My first batch of H.erectus fry!

« posted: 2 years ago »
 Hi all,

My name is Jenn. I've been keeping erectus seahorses for just about a year now. Around a week ago, I noticed my largest male (named Tal, short for Tallus), and his pouch was swollen! 6 days later, it's grown. Yay, he's finally expecting fry! His due date will most likely be the end of May or beginning of June - him and the other 3 horses are kept just below room temperature @ around 69 degrees Fahrenheit.

I've been doing research now for quite a few months, looking at potential options and system setups for raising fry. I've read a ton on here, on seahorse.org and other places trying to get at much info as possible.

After some deliberation, the fry setup I'll be using will most likely be a standard 10 gal will a light coming in from the side (to help avoid fry congregating at the surface.) The temperature will be kept at 70 degrees (I'll need a small heater for that, since I keep my fish in the basement.) There will be a sponge filter and air tubes in the corners of the tank as well. I'll be feeding newly hatched bbs for the first week, then slowly transitioning to older enriched bbs plus frozen PE calanus (instead of cyclop-eeze) then eventually onto the frozen chopped hikari mysis, regular hikari mysis, then the PE mysis. I will provide some hitching material for the babies, too. Water changes will occur as often as I can manage, hopefully every day.

I do have some questions:

1. Some people who raise erectus fry feed them peppermint shrimp fry/ clownfish fry in conjunction with the bbs. Does this work? I have no access to copepods, other than the frozen PE calanus, that's why I'm asking.

2. Are there any things to the above setup that I should include? I've heard that seachem prime is a good ammonia-binding chemical that helps when levels are high.

Other than that, wish me luck! It's my first go at this, so I'll try my best and see how things work out :) ;)

Thanks for your help/time in reading this!

Maybe I'll have a chance to post some pictures, too  :P
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  • Offline rayjay
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Re: My first batch of H.erectus fry!

« Reply #1 posted: 2 years ago »
First off, there are a lot of different ways to raise the fry.
For me, my first successes came with the use of 4L wide mouth pickle jars (12) that had open ended air lines in them with live nano added to the water and lighting was 24 hours. The lighting helped the nanno to grow, utilizing the ammonia produced by the fry and the nano would help keep the nutrient levels of the artemia nauplii up after the enrichment has worn off, although no where near the enriched levels I would start with.
The last years of my rearing I used a round "muck" bucket, a small version of the round vats that Dan Underwood uses in his breeding process.
Newly hatched brine are tough to digest because of the hard carapace of the Instar I stage where they can't feed because of undeveloped digestive system. About a day after hatching they transition to Instar II stage where they CAN feed and the enrichment process begins. A twelve hour enrichment period will gut load the artemia, but a second twelve hour enrichment with new water and enrichment will make them more nutritious as by then the nutrients will be assimilated into the flesh of the nauplii.
For hitching of fry, gutter guard (for house rain gutters) works well. Just cut off sections and place in the fry containers.
I can't comment on the Prime as all I've ever used was ClorAm-X for ammonia binder.
Like you, I have no access to copepods that are suitable for seahorse fry here in London Ontario.
Many of use found that the process is a learning experience that improves the chances of success with each batch.
I personally don't like the sponge as it tends to clog with the nauplii, and, with regular water changes I found that no biological filter was really needed in the early stages.
 
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  • Offline Serene_Blue
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Re: My first batch of H.erectus fry!

« Reply #2 posted: 2 years ago »
Thanks for your reply rayjay! I guess I won't need to worry about this for a while....

--->>> Because something super strange happened, and I was hoping you could help me. My male seahorse's pouch was swollen for over 2 weeks, he kept eating more and his belly got even larger!!! Then just after the two week mark, I came downstairs to find his pouch completely and utterly deflated. How did that happen? I checked all the filters for fry, looked everywhere and was dumbfounded. Was he faking the pregnancy? What happened? Here's a picture of him with his swollen pouch on day 10. I am so confused right now!
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  • Offline rayjay
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Re: My first batch of H.erectus fry!

« Reply #3 posted: 2 years ago »
Maybe he's been unsuccessful in getting anywhere with the female by doing the temporary pouch inflations and tried out the long term one to see if it would help. I've only had that happen once over the years so it's just a guess.
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  • Offline Serene_Blue
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Re: My first batch of H.erectus fry!

« Reply #4 posted: 2 years ago »
That's probably what happened. ??? He hasn't gotten anywhere with the female, she doesn't seem to like him that much. Thanks for the help. I guess I'll see what happens between those two and the other couple ;D
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  • Offline Knap_123
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Re: My first batch of H.erectus fry!

« Reply #5 posted: 2 years ago »
Anything v other then seahorses in the tank?
  • Offline Serene_Blue
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Re: My first batch of H.erectus fry!

« Reply #6 posted: 2 years ago »
Tank inhabitants are:

4 seahorses
2 turbo snails
2 blue-leg hermit crabs

That's it :)
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  • Offline DanU
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Re: My first batch of H.erectus fry!

« Reply #7 posted: 2 years ago »
It is possible that the seahorses consumed the fry.  Not very common with H. erectus but I have seen it.  When they get a taste of fry, they can consume the whole batch in short order just like brine shrimp.  Especially if more than one feeds upon them.

Dan
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