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Sewellia baby eating artemia
June 13, 2014
6:49 pm
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mikev
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feature=youtu.be

The species is not yet certain, but likely s.elongata

June 23, 2014
1:41 pm
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Matt
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Greedy little bugger. :) Mike, how do the adults look in comparison to Kamphol's pics? Do they have the orange markings?

Cake or death?
June 23, 2014
2:20 pm
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mikev
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Very little, and I think less yellow than they had initially. But it is the presence of slight yellow in this baby that makes me think it is an elongata baby... plus the pattern definitely does not match either s.lineolata or s.sp.spotty. (You may remember that this fry was found in a waste bucket, so I could not be sure what it is).

I'll try to take photos.... a bit complicated with the fry because it exists in only two states: hiding or eating on the front glass.

June 25, 2014
5:00 pm
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Matt
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I remember. Glad to see it doing well, and it would be great to see the adults.

Cake or death?
June 27, 2014
4:41 pm
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mikev
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Will do....

The bad news it is losing interest now.... watching this baby eating was my evening routine for the last month ... yesterday it just stopped after half hour :(

I need to try this on other hillies ... the funny thing is that H.smithi who I thought would be the most live food oriented failed ... sure, they eat artemia, but they believe in attacking each naupli individually and resting between attacks... not very effective.

July 13, 2014
5:27 pm
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mikev
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http://rainbow-fish.org/fishpic/sot.jpgImage Enlarger

I cannot see any yellow unless the fish sits on pure white object (like pvc you can see below).


Btw, I managed finally to convince e.sinensis to eat artemia. This took only a month ?!

Anyone would like to try artemia with gastros per chance?

July 13, 2014
11:23 pm
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olly
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Hi, Mike
Interesting video about Sewellia fry catching artemia.
My pseudogastro fangi fry grew on living artemia nauplii and chips with spirulina from the time then they became eat.

My adult gastros eat artemia and bloodworms. Some G.ocellatuses hunt them as predators, catching falling food on the wing.
list=UUh_HRLGQbjA2FkxDlxU9fSw
My G.viriosuses can not eat only bloodworms and artemia. If no vegetable tablets, they lose their weight. So my gastros have mixed food every day: artemia, bloodworms, tablets or chips with spirulina.

July 14, 2014
1:43 am
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mikev
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Thanks Olly,

Please clarify: on this clip I see the gastro enjoying bloodworms, but the shrimp I think is adult brine, not live artemia? It is live that would be most interesting....I think gastros can be trained.

July 14, 2014
10:19 am
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olly
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Yes, it is adult non-live shrimp. But G.ocellatuses can catch it during its moving. Yes, ocellatuses trained themselves to catch falling artemia on a glass. However they have an ability to jump and catch feed from the beginning. I suggest that in nature G.ocellatuses have some small-size mobile invertebrates in their diet as an addition to bentic algae and microorganisms. Just a guess. G.viriosuses haven’t such ability and cannot be trained in a such manner. Most of my gastros learned to eat artemia and bloodworms in the tank (2 days – 1,5 months). To my opinion, the important role in the learning of fishes to eat an unusual food belongs to the presence of example to follow – fishes eating this food .

July 14, 2014
4:54 pm
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mikev
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My 2c on brine shrimp:

the nutritional value of it is close to zero. ::=> For almost all fish it does not stimulate spawning, and while I know of an exception I do not think it will help with loaches. OTOH, I now have good evidence that live artemia is helpful with at least some loaches, just as it is helpful with a variety of other fish. (I do not want to talk about an experiment in progress, will do later). Thus it would be really interesting to see if you can get gastros catch live artemia. I'd bet that this would take some learning on their part, but I think this is quite doable.

As for bloodworms -- these are ime dangerous. Adult fish is generally safe, but juveniles (@ 1in or so) may die from bloodworms. So I don't feed them if the tank has juveniles in the "danger zone".

July 20, 2014
6:36 am
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mikev
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Well, bad news.....

The Sewellia fry is not doing well today.... mental disorder of some kind.... it figured out that knocking down other loaches from the glass results in more artemia for it, and it is now doing this systematically.

And the worst thing is that it can do it to fish that is 2x its size easily (superior suction of large sewellia fins) and seems to like doing it too....

Not going to end well.....

July 26, 2014
6:27 pm
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Matt
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Sewellia a la plancha?

Cake or death?
July 26, 2014
8:37 pm
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mikev
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0:17 into the clip, the baby knock out a male e.kalotaenia. Unfortunately, I did not record how it knocked out females... more impressive since the females are huge....

And I don't think I will be able to record it now: the attack is entirely psychological, there is no contact, and the erromyzon females now figured out that ignoring the aggression works.

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