Hmmm I’m curious about siren “family” dynamics…… if siren offspring are typically left on their own in hunting areas, do they ever interact with their parents later in life? If they do meet, can they actually recognize each other, or are the babies simply chased off by the adults?
When pups grow to a certain point, they will naturally leave. Departing without notice is normal. They will follow the information carried by the currents to find their own mates, and then begin a new cycle.
As for interactions after growing up...
well, they will most likely be driven out of their father's territory. Male sirens have an extremely strong possessiveness over their mates, and they will even guard against their own children taking away the love that belongs to them from their partner. (Male sirens are somewhat gentler toward female pups, but toward male pups, they practically bark orders at them, and the way they drive them away is extremely brutal.)
The reasoning is simple: genes that are too fragile have no need to be passed on.
Parents can shelter them for a period, but one day the pups will completely lose their ability to survive in the wild due to being overfed and kept in captivity. At the same time, the father cannot guarantee the safety of all family members at once.
Therefore, the cold‑bloodedness of female sirens has its reasons. They are more inclined to appreciate a certain outstanding trait in a particular child—for example, singing more beautifully, or having looks that fit their aesthetic, being more attractive during courtship. This is merely appreciation, not 'tender love' or 'care.' They do not possess the emotion of 'compassion.'
As for whether they recognize each other or not, it actually isn't that important, nor is there any of that 'reunion-after-long-separation' joy. Don't forget, this is the wild. There are even cases where 'grown pups kill their father and take over the mother' (like Oedipus).... Of course, such situations are extremely rare.