Not true. Icthys on mobile still are not attacked by anything in the ocean(unless u attack it). I tested it while taming a lv 80 mosa. Swam right next to it before I attacked. I still think icthys are the best underwater tame. Their fast, they have rider weaponry, and r perfect for taming plesiosaurs and mosas. Tamed easily, as they swim right up to u. They eat dodo kibble, and if u have 3-5 kibble, u can easily get one fast. (-like if this helps😁)
Basically your must-have first water mount. Outspeeds anything in the water, is ignored by all land predators, and is immune to attacks by the sea scorpions. Without this little guy, I never would have had any chance to brave Ark’s depths. Trying to tame anything else first is usually ridiculously hard. (Except for amphibious creatures that work well on both land and water.) Triple thumbs up.