birch,alder and Europian aspen. In This site one hobbyist visited in South america to see them in their natural habitat and wrote that they eat special coconut tree trunks.What that is he don`t specify.
http://tiger.towson.edu/~hnonog1/Study.htm
Some of these local trees i´ve been using are quite hard . Could there be some nutrition differences in these coconut trees that they don`t get from other sources are could benefit from? Do someone know little bit more theirs eating habits and do some species favour different types of trees? My fishes are growing well with Finish trees so i suppose there arent any lack of vitamins or nutritions.Wood is an essential item for any Panaque spp and staple diet in the field during the dry seasons. Fish well stand even only with dead wood. In the field, Panaque are usually found on or under bog woods, one particular species of coconut tree. Outside of this coconut tree is very hard, however, the inside of the tree trunks are hollowed. Brazilian fishermen explained that the inside of coconut tree is very soft and easily decayed when they fall on the ground or so on. Thus, these trees would be a very important food source for Panaque spp during the forest submerging periods in the nature. Sooner fish access the dead coconut tree, the soft part would be consumed. Then hard outside shell like tree outer trunk remained. Big coconut tree trunks are seen in rivers throughout year. P. nigrolineatus feces contains a large amount of wood shaves during dry periods.
