Rineloricaria eigenmanni spawn

All posts regarding the care and breeding of these catfishes from South America.
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bekateen
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

I seem to have found an incubation system that works in this tank.

I treated spawn #7 in the same manner as spawn #5: I left dad in the pipe with his eggs in the aquarium for 7 days, then moved the whole pipe (with dad and eggs inside) into a fry basket with a cluster of oak leaves inside, positioned in front of powerhead outflow. A few eggs hatched on day 8. The remaining eggs hatched on day 9. In total, I counted 150 fry, plus more which I didn't attempt to count as they were hiding in a cluster of oak leaves. Perhaps significant, the dad of spawn #7 is the same dad as spawn #5, the red male.

As an update on spawns #5 and 6, they are growing well but I'm losing 3-5 fry per day. I wouldn't expect all the fry (nearly 200 from both spawns #5 & #6) to survive, but this mortality seems high to me. Maybe not.

Cheers, Eric
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150+ hatchlings from spawn #7
150+ hatchlings from spawn #7
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Re: Rineloricaria eigenmanni spawn

Post by fishguy1978 »

With your eggs fungusing when removed from the cave, have you considered meth blue in a separate hatch tank? I have BN and leave the eggs with the male until hatched and egg yoke consumed.
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

fishguy1978 wrote: Mon Apr 27, 2020 9:12 pmWith your eggs fungusing when removed from the cave, have you considered meth blue in a separate hatch tank? I have BN and leave the eggs with the male until hatched and egg yoke consumed.
The eggs are really difficult to remove from the tubes/pipes. When I had the 1st spawn, the spawn where I removed the entire pipe without dad (instead of leaving him in the tube with the eggs), I placed the tube in a 2-2.5 gal aquarium with a sponge filter. That tank did get a dose of methylene blue. But many of the eggs fungused early and all the eggs died eventually. I think it could be worked out, but since my current method has worked well twice (leave dad with eggs in pipe and isolate the whole pipe with dad inside), I'm going to keep on doing this for now.

One thing I've been pondering is why don't the eggs fungus in dad's care? These whiptails are not like plecos - they don't fan the eggs, they don't move the eggs and dribble or tumble them as some dad plecos do. No, rather they just sit on them. I wonder if there are anti-fungal chemicals in the slime secretions from the father's belly which, when combined with (I speculate, since I haven't seen it) occasional cleanings with dad's lips, serve to keep the eggs fungus-free.

I would imagine that methylene blue or some other chemicals might suffice if needed but only it's only needed if you can remove the eggs from dad and maybe even get them free from the tube wall (e.g., using sodium sulfite to dissolve the egg jelly).

Cheers, Eric
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Re: Rineloricaria eigenmanni spawn

Post by fishguy1978 »

Ah, I should have read more closely. Great read.
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

Spawn #8 2020‐04-29 between 6pm and 9pm.

I'm guessing this is the same male, and maybe same female, as in spawn #6. The couple is in the same pipe, and the eggs are all over the sand. What a mess. So far, I don't see a single egg in the pipe yet. About 90 minutes after the first photo, I returned and found the eggs devastated by other fish in the tank... not eaten, but buried and dispersed. I managed to recover 139 sand-coated eggs. Into an incubation basket they went. Let's see if they hatch (fortunately, the same lost eggs from spawn #6 did pretty well hatching, so hopefully these do too).

The problem appears to be that the male (and/or female) doesn't enter far enough into the pipe. If he stays with his tail hanging out, she can't follow inside #CoronavirusSexyTime
  • 21 February: Spawn #1
  • 05 March: Spawn#2 (13 day interval)
  • 20 March: Spawn #3 (15 day interval)
  • 28 March: Spawn #4 (8 day interval)
  • 02 April: Spawn #5 (5 day interval, or 13 days if this was the female from spawn #3)
  • 06 April: Spawn #6 (4 day interval, or 12 days if this was the female from spawn #4)
  • 18 April: Spawn #7 (12 day interval, or 16 days if this was the female from spawn #5)
  • 29 April: Spawn #8 (11 day interval since spawn #7, or 23 days if this was the female from spawn #6)
FWIW, there's a second couple together right now also. This happened last time for spawn #7, but the second couple didn't breed that time. Maybe this time?

Cheers, Eric
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

bekateen wrote: Thu Apr 30, 2020 4:40 amFWIW, there's a second couple together right now also. This happened last time for spawn #7, but the second couple didn't breed that time. Maybe this time?
Success! The second pair finished spawning overnight and they did it the right way, with their eggs in the pipe.

Spawn # 2020‐04-29 between 6pm and midnight. #CoronavirusSexyTime
  • 21 February: Spawn #1
  • 05 March: Spawn#2 (13 day interval)
  • 20 March: Spawn #3 (15 day interval)
  • 28 March: Spawn #4 (8 day interval)
  • 02 April: Spawn #5 (5 day interval, or 13 days if this was the female from spawn #3)
  • 06 April: Spawn #6 (4 day interval, or 12 days if this was the female from spawn #4)
  • 18 April: Spawn #7 (12 day interval, or 16 days if this was the female from spawn #5)
  • 29 April: Spawn #8 (11 days if this was the female from spawn #6)
  • 29 April: Spawn #9 (23 day interval since spawn #7)
Cheers, Eric
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

Update on oldest fry (from spawn #2, eggs laid 05 March, eggs hatched about 12-13 March; here), now 7 weeks old and over 3cm SL.
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

The 2.8 spawns per week has stopped in my tanks, but spawns are still happening. Today I found another Rineloricaria eigenmanni spawn, with the red male brooding the eggs! :-BD

As to day counts, 20 days since spawn #9. #CoronavirusSexyTime

Cheers, Eric
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

Three months, 46 mm SL
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Re: Rineloricaria eigenmanni spawn

Post by TwoTankAmin »

Nice work Eric. Gotta love those green eggs even without the ham.

I do have one suggestion. Very early on I used those mesh baskets. I lost fish. Years later I discovered the marina hang-on traps which use an air pump to move tank water through the breeder box which is a solid plastic. There is only one caveat when using these, the intake tends to bring in any solids in the water which tend to settle on the bottom of the box. There are two ways to deal with this. The easiest it to put a fine mesh bag over the intake. The other is to use an airline to siphon out the debris once or twice a day.

These boxes hang off of the front of any tank against a wall, but you can hang them wherever they fit. The eggs or fry are safe. I will sometimes pull a cave with dad on wigglers to the trap. When the fry are let out, the cave and dad go back.

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https://www.bigalspets.com/marina-hang- ... l?sku=1888
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https://www.amazon.com/Marina-Hang-On-B ... B005QRDCP2

I have 6 or 8 of these boxes. I also use them to hold fish pending shipping or to sort fish into different size groups when I do a fry hunt.
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

Surprise discovery of yolk-filled eigenmanni fry this morning. Estimating 8-10 days incubation and hatching yesterday, that puts the spawning date somewhere around 10 June or 11 June, about 22-23 days since last known spawn. I see about a dozen scouting around the tank. Later I found the red male on what I expect are the remaining unhatched eggs. I moved his tube to a fry basket so I can contain the hatchlings. #CoronavirusSexyTime
  • 21 February: Spawn #1
  • 05 March: Spawn#2 (13 day interval)
  • 20 March: Spawn #3 (15 day interval)
  • 28 March: Spawn #4 (8 day interval)
  • 02 April: Spawn #5 (5 day interval, or 13 days if this was the female from spawn #3)
  • 06 April: Spawn #6 (4 day interval, or 12 days if this was the female from spawn #4)
  • 18 April: Spawn #7 (12 day interval, or 16 days if this was the female from spawn #5)
  • 29 April: Spawn #8 (11 days if this was the female from spawn #6)
  • 29 April: Spawn #9 (23 day interval since spawn #7)
  • 19 May: Spawn #10 (20 day interval since spawn #7)
  • 10-11 June (estimate): Spawn #11 (about 22-23 day interval since spawn #7)
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

Dad and children
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

Idiot dad, and the lady shown outside his home, have started spawning in a closed-ended pleco cave instead of in open-at-both-ends pipes/tubes.

Ughh...
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bekateen
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Re: Rineloricaria eigenmanni spawn

Post by bekateen »

3 cm SL
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