firefish11 wrote:Normally just needs 2 b a hardwood. If u can press ur thumb nail into the wood and leave an impression its probably not a good piece for the tank
MatsP wrote:"Hardwoods are not necessarily harder than softwoods"
Matt30 wrote:Hi I found this piece of Sumatran Driftwood, with a little help of a mate that works in my not so LFS, I liked it so much I had a tank built round it!
jp11biod wrote:does anyone know of which roots or wood that looks like wood?? I am thinking long and wavy as opposed to most wood found for aquariums--
...... So, just to summarize what I think these fish are doing… the wood-eating catfishes dig into decaying wood and efficiently digest wood degradation products that environmental microbes are making available as they degrade wood. The fish also have elevated digestive enzyme activities (e.g., N-acetyl-b-D-glucosaminidase) suggestive that they digest fungi within the wood matrix. Thus, they likely get “energy” from the degraded wood. The stable isotopic signatures (carbon and nitrogen) of wild-caught wood-eating catfishes certainly suggest that they get their protein from fungi and amorphous detritus, and we find periphyton and amorphous detritus in their guts (in addition to the wood; see the “inside the guts” paper where I do a detailed gut content analysis of wild-caught fish). Basically, the fish have to get their nitrogen from somewhere other than the wood detritus (there isn’t much N in wood anyway). The fish certainly ingest wood, they just don’t use the same “pathway” to obtain energy from it as a termite. Rather than harbouring an endosymbiotic community, they let the microbes in the environment do the work for them. This may be a function of living in an aquatic environment
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