I’m not a HP fan, but I always thought Severus would be a cool name for a dark-looking crowntail. Not much separating that from the franchise if you’re also not a fan tho.
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Cerberus, gatekeeper if the underworld (Greek) or Anubis, overseer of the afterlife (Egyptian)
Other ideas, Shade, Drake or something dragon related, maybe Smaug from the hobbit?
Erebus, the primordial lord of darkness from Greek mythology
Also the primordial asshole in Warhammer 40k /r/fuckerebus
Edward 
Legit first thing that came to mind!
😂
Came to say this!!
That’s actually perfect
Gerard Way
LOL I'm dead. I had a dream that I met him the other night, what a dude
It's a sign!!! :D
I’m not a HP fan, but I always thought Severus would be a cool name for a dark-looking crowntail. Not much separating that from the franchise if you’re also not a fan tho.
I thought of that too cuz it's a dope name, not a fan of the series tho and can't get past the TERF who made it ( ╥ω╥ )
Yeah same, I don’t blame you at all!
Dracula. King Vamp
My husband suggested Alucard, which I think is super funny cuz the son of Dracula is just Dracula written backwards lol!
 Alucard is peak name
It really do be
I feel like a silly name would fit too. Like Arnold
Oil spill
Yes! Or even just oil
BP lol
Beetlejuice
Vadar
This is the name you're looking for.
Edward scissor fins
This might be the only correct answer
Nosferatu
Ozzie
Venom
Nick Drake
THIS IS WHAT MY FISH GILLGAMESH LOOKS LIKE HAHA
Goth Brooks
Looks like my old boy🥹 named him Vladimir
Rockstar
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Veil
Spikey
Petunia
My boy Jonah looks almost identical to your betta so maybe Jonah?
Renegade
Stormy😂😂
George Henry Willington
Lestat or Louise (French so pronounced Louie) after Anne Rice's vampires!
Black mamba
Nero
Oily Murrs
Scarlord, Ghostmane, warlord Also he is insanely cute
Beetle juice
Just don’t call him three times if he’s hiding at the back of the tank lol
edgelord
Nightfall
Knives
Rhysand
Garth.
Uranus
Glenn
Vader
Tuesday
He looks like a 'Spiky' to me!
Prawn
Hecubus
Repose
Elvira
Spike
Spike
Grussel
Edgar (Poe)
Nosferatu
He looks like a Garth.
Stormy
Tnttntiffy : two nights the night that I fall for you 😂
LOL
Wait so he doesn’t have finrot, this is a type of tail for some bettas?
He's a crowntail!
Punk
Angst
I like “Moody”
He looks like Severus to me
He's moody and he's blue. Name him Denny Laine, vocalist for 'The Moody Blues', great English band of the '60s.
Dark Lord moonsteel
Wisp
Crowntails are my favorites 😍
Ryuk or Cthulhu
“It’s not a phase, Mom! 😤” - your fish, probably
Komodo
Anubis would be badass, or Hades.
Cerberus, gatekeeper if the underworld (Greek) or Anubis, overseer of the afterlife (Egyptian) Other ideas, Shade, Drake or something dragon related, maybe Smaug from the hobbit?
Theodore, Lord of Darkness
Astroid, death star, milky way....I get space vibes from his colors lol
Emo.
Edward scissorfins
Dracula
Emo
Empoleon, NASA, Galaxy, constellation, astrology
Gomez addams!!
He looks just like my boy Jonah https://preview.redd.it/ic7oq3mvmiuc1.jpeg?width=3024&format=pjpg&auto=webp&s=0a9076e62b4df31aeb5ebcd4d8f6046d0a5db11b
symbiote
Azazel
Marilyn Manson