Linked from
The 19 pages that link to Pelagic fish, each with the reason it gives.
Trawl fishingRelated: Midwater trawls commonly target these open-water species.
OpahRelated: Opahs inhabit open-ocean waters rather than a fixed reef or bottom habitat.
BarreleyeRelated: Barreleyes are inhabitants of open ocean waters at depth.
Snipe eelRelated: Snipe eels inhabit open water, including deep ocean layers.