Sorry for a bit of a tangent, but this has been on my mind for sometime, so I’m just putting it here instead of starting a new thread because you know all these sides are the same thread.
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Salmon and trout are closely related species both belonging to the same family of fish called Salmone. They share many similarities in terms of their appearance, behavior, and habitat preferences.
One common ancestor gave rise to various species within the Salmonidae family, including salmon, trout, and other fish like char and grayling. This common ancestry is the reason why salmon and trout share several physical characteristics, such as their streamlined bodies, adipose fins (a small, fleshy fin between the dorsal fin and tail), and the presence of scales.
As for the mention of angels, it's worth noting that salmon and trout are sometimes referred to as "angel fish" due to their beauty and grace in the water. However, this is not a biological or scientific term but rather a nickname given by some people who appreciate these fish.
In summary, salmon and trout have a close evolutionary relationship as members of the Salmonidae family, sharing common traits and characteristics. While they may be called "angel fish" by some, this is more of a descriptive term used to highlight their aesthetic appeal.”