Because sometimes, what you really need for your mermaid OC is that extra bit of uniqueness to it. I tried to aim for as much diversity with this dataset as I could before getting to work, with as many types of real-life fish represented as I could think of at the moment, which is still far from all of them, if I represented all of them in this lora from the start, I'd be here for ages. Still, I went for a diverse selection of types to choose from, and the tags for each specific one is listed below.

Shark: shark mermaid, two-tone skin, grey skin, shark dorsal fin, sharp teeth

Lionfish: lionfish mermaid, venomous spines, lionfish dorsal fin, striped tail, scales

Clownfish: clownfish mermaid, orange tail, striped tail, clownfish head fins, scales

Eel: eel mermaid, very long tail, lamia, eel head fins

Anglerfish: anglerfish mermaid, illicium, esca, sharp teeth, blank eyes, bioluminescence, scales

Jellyfish: jellyfish mermaid, jelly hat, jelly skirt, tendrils, transparent body, transparent hair, biolumiescence, shiny body, tentacles

Koi: koi mermaid, white mermaid tail, red mermaid tail, orange mermaid tail, black mermaid tail, spotted mermaid tail, koi mermaid tail, scales

Manta/Stingray: manta ray girl, ray head fins, ray pectoral fins, stingray tail

Cephalopods: scylla, tentacles, cephalopod eyes, horizontal pupils, tentacle hair

Seahorse: seahorse girl, seahorse mermaid tail, dorsal fin

Sea dragon: seahorse girl, seahorse mermaid tail, dorsal fin, sea dragon mermaid, leafy mermaid tail, very long tail

Betta/Siamese fighting fish: betta mermaid, large fins, dorsal fin, ventral fin, hip fins, arm fins

Siren/Harpy hybrid: siren mermaid, harpy, wings, feathered wings, winged arms, feathers, hip feathers, feathered scales

Melusine/two-tailed: melusine, split mermaid tail, [insert leg pose here]

Sea angel: sea angel girl, pectoral fins, horns, bioluminescence, shiny skin, transparent skin, sea angel tail

Sea snake: sea snake girl, lamia, very long tail, striped mermaid tail

I definitely recommend you to mix and match tags from these mermaid types too if you wanna have some fun. It will help you get some real randomness to your mermaids, and help them look even more unique. Which brings me to the final set of tags, specifically trained on patterns with little reference, or based on characters with unique tails like Sayu from No Straight Roads or Shirahoshi from One Piece, as well as Ariel's sisters from the Little Mermaid remake. The result here is a little wonky, and often very chaotic, but it does its job decent enough. I recommend playing with the individual tag weights here because the results tend to vary a lot depending on the weight you use these tags at.

Random pattern: random pattern mermaid, multicolored mermaid tail, scales

Finally, weight. I recommend you use this at weight 0.7. You'll find it might be a bit too rigid at 1, but it should work there too, depending on the type. It might change with future releases, I dunno.

And yes, I'm taking requests for specific types of fish to represent in future releases of the model, so feel free to comment if you feel like a specific type of mermaid is missing. As of writing moment, I'm only really considering cethlapods/scyllas and sea snakes for the next release, so any specific suggestions would be very appreciated.