Salarias fasciatus Fry

Salarias fasciatus Fry

Postby Qb6945 » Wed Feb 23, 2011 11:37 pm

I have recently acquired another batch of Lawnmower Blenny eggs, and wanted to keep track of progress here.

The eggs have been taken from a 42,000 gallon reef tank, where Salarias fasciatus spawning is a regular occurrence. Only recently have i been experimenting with ways to retrieve eggs from a variety of fish.

During my first attempt at hatching Lawnmower Blenny eggs, most of the eggs died due to lack of aeration. The eggs were laid on the inside of a very thick clam shell. The shape of the shell made it very hard to aerate, because air pockets would form in most positions.

Image


My newest batch has been laid on the inside of a 2" PVC pipe. The pipe was placed in a 20 gallon long aquarium where it has been suspended vertically and over heavy aeration. Water temperature is eighty degrees. I plan to let the eggs hatch in this tank, and then separate the fry after the hatch. Two thirds of the hatch will be placed in a thirty gallon and one third will stay in the twenty gallon. The clutch is very large, i would estimate over eight hundred.

Image


The outsides of the tanks will be covered in cardboard, and egg crate with two sheets of shade cloth placed above the tank. A single twenty four watt T5 is suspended two inches above the egg crate.

Image

I am hoping that this setup works, as it will be my first time hatching a full clutch.
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Re: Salarias fasciatus Fry

Postby spawner » Wed Feb 23, 2011 11:59 pm

A 42,000 gallon reef tank, not your normal broodstock system.
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Re: Salarias fasciatus Fry

Postby Qb6945 » Thu Feb 24, 2011 12:01 am

spawner wrote:A 42,000 gallon reef tank, not your normal broodstock system.


Yes, the size is a bit overwhelming at times.
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Re: Salarias fasciatus Fry

Postby BaboonScience » Thu Feb 24, 2011 2:19 am

Pics of the Broodstock System?
Anyway, these blennies hatch out fully ready to feed but are a bit small.
Fair warning.
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Re: Salarias fasciatus Fry

Postby spawner » Thu Feb 24, 2011 10:23 am

John have you gotten them to eat for you?
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Re: Salarias fasciatus Fry

Postby BaboonScience » Thu Feb 24, 2011 4:31 pm

Yes, they even grow. I get to about day 14 - 20 then they all die within about 48 hours.
Till that time, they have grown to about 4x their hatchout size.
I am certain that it is dietary but have a hard time getting them from rotifers to copepods.
Some have made it, BTW.

You all have seen my larval pics....That explains alot of why I have not posted any.
But I keep trying. Someday I will get a good pic.
John
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Re: Salarias fasciatus Fry

Postby Qb6945 » Sun Feb 27, 2011 12:11 pm

Sorry i have been away for a couple of days.

Here is a photo of the broadstock system. Shown are three out of seven windows.

Image

The lawnmower blennys hatched last night.

Image

I lost a couple hundred by this morning, but was able to save well over five hundred. I have separated the fry into two tanks. One of which i have constant water changes going throughout the day via dripline syphon. I have mixed spirulina with water from the broadstock tank as incoming water.I am keeping the rotifers and fry from being syphoned by using a rotifer net as shown here :
Image

The second tank is being fed with rotifers and greenwater only.
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Re: Salarias fasciatus Fry

Postby Qb6945 » Sun Feb 27, 2011 3:34 pm

It looks as if the blennys are eating the spirulina. There is a green speck in each of the fishes stomaches.
Image
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Re: Salarias fasciatus Fry

Postby Qb6945 » Sun Feb 27, 2011 8:32 pm

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Re: Salarias fasciatus Fry

Postby Qb6945 » Tue Mar 01, 2011 1:06 pm

Mass mortality on day three, NH3 spike. Will be diving to look for more eggs today.


Edit : This was due to my own stupidity. Accidentally left an airline siphon in the tank and it drained about ten gallons of water. I also think that i added too many rotifers to the tank.
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Re: Salarias fasciatus Fry

Postby Qb6945 » Mon Mar 28, 2011 9:27 am

Should i start a new thread to document new eggs?

Anyway, i managed to pull some more Lawnmower Blenny eggs out yesterday. I also managed to capture the male who was tending to the eggs. I now have him in a bare 30 gallon tall, where he is still tending to the eggs. The eggs were laid on the night of March 24th.

Image

This is a picture of the male. He is about 6" long. He is housed in a 2" PVC length.
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Re: Salarias fasciatus Fry

Postby spawner » Mon Mar 28, 2011 9:34 am

Nice shot of the male, that is a big blenny. Looks like a lot of eggs behind him as well. Keep us posted on your progress.
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Re: Salarias fasciatus Fry

Postby efren » Mon Mar 28, 2011 7:20 pm

yes what a great display tank and i think i was having hard time in getting larvae from my 1000 gallon tank ( there is always someone biger than you jejej) i have some pairs and i will give them a try this year just waiting for eggs
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Re: Salarias fasciatus Fry

Postby nicole » Thu Mar 31, 2011 12:13 pm

An update on the eggs ( Qb6945 and I are co workers)

Eggs hatched March 30,2011. I would guess about 800 or so. They were separated into three ten gallons. Factors that varied between the tanks: Painted black vs. Unpainted and fry density.

Tank 1: High Density, Unpainted
Tank 2: Painted, Low Density
Tank 3: Medium Density, Unpainted

They were fed rotifers twice on day one. Rotifer density was monitored hourly.
12:00 pm 25% Water Change using 0.3 micron seive and siphon.

Day One Deaths: Tank 1 ~approx 50, Tank 2 ~0, Tank 3 ~12

Day 2" Fry alive in all tanks. Most death seen in tank 1. No nitrates present, however there was very low ammonia and nitrite levels. No nitrates, nitrite or NH4 seen in tank 2 or 3. Least death seen in tank 2 (2 fry) and tank 3 had moderate death (10 fry)
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