Most real life human languages only have gendered given names (they can only be female or male).
In my world, there is a species of Euarchontoglires from the Homo genus named merfolk (their scientific name is Homo maritimus) (so, there are still humans, just not Homo sapiens). They do not like the merfolk from Hans Christian Andersen's The Little Mermaid (I do not want a psychedelic-looking organism, I want to go on a realistic way):
- They have a seal-like blubber;
- They DO have feet and hands, but their digits are webbed;
- They are as peaceful as capybaras;
- They are negligibly senescent like naked mole-rats;
- They are adolescents/teenagers all their lives, in the sense that they never stop growing like crocodiles;
- Adults without dwarfism, neither gigantism, and that are not obese, neither gaunt, are on average as massive as belugas;
- Females are larger than males like great white sharks;
- They are as solitary as blue whales;
- They are MUCH more likely to be autistic than anatomically modern humans;
- They DO have the power of speech, but the mostly communicate by an opera-like way of singing;
- If we compare them to neurotypical anatomically modern humans, they have a MUCH higher intrapersonal intelligence, a higher musical intelligence, and a somewhat higher naturalistic intelligence, but a MUCH lower interpersonal intelligence, a lower mathematical intelligence, and a somewhat lower kinesthetic intelligence.
In the most common language spoken by merfolk, there are ONLY unisex names (that can be both female and male).
The top 10 most common given names in the merfolk worldwide society are: 10. Bziro (which means "sailor"); 9. Nugeupaci (which means "peaceful fool") (the word nugeu means "fool"); 8. Dralmyze (which means "Beautiful Blubber") (the word dral means "blubber": this is the French word lard spelled backwards); 7. Troglau (which means "stong shark") (the word tro means "shark"); 6. Vairos (which means rescuer); 5. Rrjym (which means "ruler"); 4. Dejavrepsi (which means "redeemed dictator") (the word dejav means "dictator"); 3. Dhyhoiz (which means "purple"); 2. Thadrhau (which means "singer"); 1. Wafeupsydu (which means "smart adventurer") (the word wafeu means "adventurer").
So, I wonder why would a language only have unisex names.