L128

Doodle

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May 4, 2009
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Bracknell
Hi

i came home yesterday to find that id lost my 5" lad.

Im not sure why yet but did the water change etc.

I curious how long they live for - i cannot seem to find any hint on some of the sites i looked at briefly yesterday. Any one know?

regards

Paul
 

dw1305

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May 5, 2009
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Hi all,
i came home yesterday to find that id lost my 5" lad......I curious how long they live for
Sorry to hear that, always a horrible feeling. I don't think any-one knows what their natural life spans are, but you can use the things we do know about them to get an estimate.
  1. They are slow growing, and potentially fairly large.
  2. They have few young and show parental care.
  3. They come from stable environments.
These are the classic signs of a potentially long-lived organism like Apes, Parrots, Elephants etc, those that Biologists refer to as "K selected" <http://en.wikipedia.org/wiki/R/K_selection_theory>.

Other people will have kept bigger L numbers much longer, but I've had an Otocinclus that arrived as an adult, and is at least 4 years old. This is a much smaller fish than L128.

Based on all of this my suspicion would be that any larger L number is probably capable of living for c30 years, and I would also bet that many large Panaque specimens are a lot older than this.

cheers Darrel
 
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dw1305

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Hi all,
I knew I had some age data for Panaque nigrolineatus, and it is in Nonogaki et al. (2007)"Dietary histories of herbivorous loricariid catfishes: evidence from d13C values of otoliths" Environ Biol Fish Volume 78, Issue 1, pp 13-21.
The average number of growth rings from the field collected P. nigrolineatus was 15.2 ± 3.76 SD ...... Wet and dry seasons alternate once per year at the field sites, so that each otolith ring is thought to represent an annual growth ring. Accordingly, this suggests that growth rates for these loricariid catfish species are low. The reported maximum size for each species is 43 cm for P. nigrolineatus (Fisch-Muller 2003) Thus, these loricariid catfish are presumed to be long-lived to achieve such large body sizes despite low growth rates.
cheers Darrel
 
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Doodle

Member
May 4, 2009
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Bracknell
Thanks for the replies- kinda know it cant be age just wanted to rule it out.

Ive yet to get home again to today but the report is the tank is "looking" okay and nothing untoward in the other fish!
 

zeebo

Member
Jun 11, 2010
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ct ,usa
hi Doodle, sorry for your loss. While i am not an expert , i have 2 L128's, one is also 5'', and a smaller one. How long did you have him for ? When you did
your wc,did you remember to keep the water level lower than the rim ? I keep a pc of blue tape on the glass as a marker so I don't overfill. L128's need a lot of oxygen. I have read of someone who lost 4 due to wc and unintentially filled the tank too high. I have 2 HOB's and 2 air stones too.

Yes, they do get larger than 5'', I have seen full grown adults and they get big, wide and fat heads .(.best way i can explain), but they would make my 5 inch phantom look itty bitty.

I could be wrong,but if your water is fine and it showed no other signs of illness, I would lean toward oxygen ,but also ,not knowing your set up it would be hard to say for sure. Sorry again.
 

dw1305

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May 5, 2009
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Hi all,
Georgie wrote
I would lean toward oxygen
That is usually my first thought for any "unexplained" rheophilic plec deaths. Aeration is such a complex issue, and as well as the direct sudden death from a catastrophic loss of oxygenation, you get a lot of sub-lethal effects (on biological filtration for example), which can cumulatively lead to ill-health and death.

Newer members may not have seen our article:
"Aeration and dissolved oxygen in the aquarium" - <http://plecoplanet.com/?page_id=829>.

It isn't a particularly easy read, but stick with it, because it covers all the different factors that effect oxygen levels in the tank.

cheers Darrel