The best replacement for steelhead is salmon.

The best alternatives to steelhead are rated as following:
★★★★★  salmon
★★★  rainbow
★★★  trout
★★★  rainbow trout
★  coho
★  atlantic salmon
★  salmon identification
★  sockeye
★  waas
★  brown trout
  chugger
  nap scorpion
  steelheads
  king salmon
  silver salmon
  hatchery

Your alternative for steelhead is not listed? Suggest!
Speaking about steelhead, one probably shouldn't forget about riverbed.

Other search terms related to steelhead and their ratings are:
★★★★★ riverbed
You have in mind a companion for steelhead and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of steelhead in all years. Click on graph for more.
steelhead
salmon
rainbow