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Spawning Devario acrostomus
November 14, 2013
8:34 pm
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BallAquatics
Tremont City Ohio, USA pop.640
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About 6 weeks ago I was fortunate enough to pick up a bag of these at my local fish clubs fall auction.  I put them in a 20 gallon long tank with a heavy growth of vallisneria over about 75% of the tank.  The tank is un-heated with water temperatures in the high 60's, low 70's.  I've been feeding them live daphnia along with meaty pellet foods, (earthworm, shrimp, etc.), and the occasional algae wafer.

This morning while working in the fish room, I dipped out a couple of dozen fry.  As the adults are close to 3 inches in length, the fry are able to hide out in the tangle of vallisneria at the waters surface.

800x788_fry_001Image Enlarger

Dennis

November 14, 2013
9:15 pm
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BillT
Eugene, Oregon
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Nice Dennis!

 

I looked up the profile on this species in the KB.

I find it interesting that the species has barbels.
I was under the impression that Devarios, as opposed to Danios, did not have barbels.

An exception, a misclassification (seems unlikely to me), or was my understanding of this wrong?

Bill Trevarrow [email protected]
November 14, 2013
10:43 pm
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BallAquatics
Tremont City Ohio, USA pop.640
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Per Wikipedia (http://en.wikipedia.org/wiki/Devario)

The genus Devario comprises some danionins familiar to aquarists. Generally, they are larger fish than species of the genus Danio, they have short barbels (if present at all), and generally have deeper bodies than Danio species, with species having vertical or horizontal stripes present. In size, they range from 5 to 15 cm (2 to 6 in).

Dennis

November 25, 2013
12:23 pm
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Matt
Málaga, Spain
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Somehow missed this thread earlier, how are the fry doing Dennis?

I think that D. acrostomus is the only Devario species with long rostral barbels with most having a short maxillary pair.

Cake or death?
November 26, 2013
1:08 am
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BallAquatics
Tremont City Ohio, USA pop.640
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Matt said
Somehow missed this thread earlier, how are the fry doing Dennis?

Very well Matt, thank you for asking.  They are in a green water tank with quite a number of Moina for a constant food source. Once they start to show some markings, I'll try to get some photos to document their growth.

Dennis

December 23, 2013
2:03 pm
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BallAquatics
Tremont City Ohio, USA pop.640
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Here's a couple shots of the adults in their Vallisneria jungle.....

1280x1024_adults_002Image Enlarger

1024x544_adults_001Image Enlarger

The fry seem to be rather slow growing. I have about 2 dozen living in a green water tank with Monia, and another 2 dozen still in with the adults.  At 6 weeks old they are only about .5 inches in length.  One factor may be the rather cool water temperatures in the fish room at this time of year.

Dennis

January 7, 2014
5:19 pm
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Matt
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Handsome fish aren't they?

Cake or death?
February 23, 2014
2:37 pm
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BallAquatics
Tremont City Ohio, USA pop.640
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Well the fry are around 3 months old now and starting to look like miniature adults.

Acrostomus fry at 3 monthsImage Enlarger

It's been a very cold winter here in Ohio and temperatures in the fish room have been on the chilly side. This may have lead to the fry growing at a reduced rate.

Acrostomus fry at 3 monthsImage Enlarger

Devario acrostomus adultsImage Enlarger

The adults have continued to spawn on a somewhat regular basis and there appears to be a small number of fry from 3 or 4 different spawns living with the adults.

Devario acrostomus adultsImage Enlarger

Dennis

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