No, I definitely think they implied the Kriosians were a different species entirely.
Interesting - where do the implications come in?
Krios is called "one of their colonies", not a conquered world. Why would Klingons colonize a world with non-Klingon settlers?
Timo Saloniemi
Imperial regimes have sometimes referred to territories they conquer as colonies, hence "colonialism". There might also be a number of reasons the Klingons would send non-Klingon settlers:
- Krios could be a mining planet or an agricultural world that uses non-Klingon labor
- The surface of Krios could be dangerous to Klingons in some way, therefore they sent non-Klingons who could survive on the planet's surface to terraform the planet to suit Klingon preferences.
This is all assuming the Kriosians we're discussing here aren't the same Kriosians we saw earlier in TNG,
The Perfect Mate I think was the name of the episode.