I recently had to treat a L260 for bloat (it is recovering well), it is the first time i have had it with my plecs and it has me thinking about what i feed my hypancistrus over the long term.

I do have a tendency to overfeed them a bit, but that is just to condition them.
I alternate their diet with the following; Frozen foods such as; Brineshrimp, Mysis, Krill, Black Mosquito Larvae & Bloodworm, and dry foods such as; Tetra Tabimin, Tetra Prima, Hikari Carnivore Tablets, Hikari Crab Cusine, Brineshrimp Sticks and Earthworm Sticks.

In the last year i have added broad beans to their diet once a week, which they all eat, and have recently been trying them with Zucchini, which some eat alright, whereas others so far ignore it.
I also do not feed them one night each week.

It may have been stress through fighting that caused the L260 to bloat, as the L260 in this tank are prone to fighting.
But it me checking their diet, incase that has anything to do with it.

I am worried i feed my plecs a high protein diet too much, and should add more greens to their diet ?
As i find it dosen't take too long to plump the fish up, but they still keep eating well, a few of them look really plump.
After finding the bloated L260, i am wondering if too high of a protein diet through tme would cause this, or would they just poo a lot after over eating, as i do clean a ot of poo out of tanks daily.

Would feeding greens more regularly, maybe three times a week, be bad for a carnivore, i am talking over the long term ?

I feed my fry, half greens and half dry foods each feeding, and am thinking of doing this with the adults.

Reading Ingo Seidel's book on L-Catfishes, i am suprised to find in the feeding section that he classies Hypancistrus as Omnivores.

From the feeding section in the book, the omnivore section is just after the Aufwuchs-feeders section, but before the Wood-eaters section and the Carnivore section;

"The Omnivores"
As well as the exclusively Aufwuchs-feeders there are, of course, also numerous genera and species that constitute intermediate forms between the Aufwuchs-feeders and the carnivores, as they are fairly easy to feed on both vegtable and animal food and in addition they are not as highly specialised as regards their digestive tract that they cannot cope without problem with an unbalanced diet for a limited period of time.
These genera include, for example, aquarium-hobby favourites such as; Peckolita, Hypancistrus, Ancistomus and Parancistrus.
These catfishs are characterised by a noticeably smaller suckermouth, and - compared to the Aufwuchs-feeders - a somewhat more strongly reduced definition.
Thus they too possess rows of teeth arranged like the teeth of a comb, and these are again bicuspid, but the number of teeth is signficantly smaller.
And thus these fishes also have only a limited function as algae cleaners in the aquarium. This means that there is also unlikely to be any problem with their damaging aquatic plants.
However, the juveniles of the Hypancistrus species perhaps constitute a minor exception to this rule, as they apparently have a greater requirement for vegtable food and will fill this need by eating holes in the leaves of higher aquatic plants.

As well as eating the types of food already mentioned for the Aufwuchs-feeders, omnivores can be feed with any of the usual animal foods that are offered to loricariid catfishes.
These may include, for example, live and frozen mosquito larvae, Daphnia, Cyclops and brine shrimp, as well as; shrimp, mussel and fish flesh.
As well as flake, granules, and tablet foods there nowadays also special manufactured foods for loricariid catfishes in the form of "chips".
As a rule the ominivores will eat all these foods without problem.

I had read a little complication on the forum but I will keep on relating for emphasis. Nevertheless, Hypancistrus may need to reduce protein even though they are too much required to eat holes. Higher aquatic plants as the vegetable food has a lot of proteins, that is why fishes want to eat it.