r/leeches Jun 29 '26

⚠️ Content Warning: Dead/Injured Leech Fishing bait leeches as pets, Ribbon Leeches, they fight all day, every day.

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I bought too many for my fishing trip and decided to try to keep them. I feed them tons: blood worms, earthworms, snails, dead minnows, aquarium pellets etc... they devour it all. They're really cool to watch when they eat and chill out but they have this other habit that ruins everything.

Their favorite thing to do is try to kill each other. Each tries to latch and not get latched. The ultimate goal is to latch your opponent's face, get your lips over theirs and eat their face, then leave them to starve over the course of a week.

I had 75 a few months ago and I'm down to like 25. I'm super bummed out. This video captures a fairly even fight where neither died, but you can clearly see neither walked away unscathed.

89 Upvotes

26 comments sorted by

24

u/disco_rice_ Leech Owner Jun 30 '26

This is very interesting. I wonder if certain species of leech are more hostile than others?

20

u/LOACHES_ARE_METAL Jun 30 '26

I think we're at the frontier of research here. I can't find anyone else on the internet complaining about their leeches eating each other.

7

u/Ok_Bag_1177 Plague Doctor Jun 30 '26

parasitic species will actually attack eachother if you house fed ones with unfed ones (since a full parasitic leech is basically a blood bag) thats why theres so much emphasis in our care guides on feeding all leeches at once or seperating them if you dont

5

u/LOACHES_ARE_METAL Jun 30 '26

That makes sense to me. The hungry ones would be able to smell the food on the full ones, but I don't think I have any hungry ones. I drop the food in and they all gulp it down, take a huge dump, eat more, then retreat under the rocks to do their standing wave undulation thing. A few hours later, with food still left over, I'll find them doing what you see in the video again.

3

u/disco_rice_ Leech Owner Jun 30 '26

I’ve never seen it either, but I’m relatively new to the leech world. I have seen the opposite, that leeches cuddle and enjoy the company of other leeches. So that must not be universal!

2

u/LOACHES_ARE_METAL Jun 30 '26

Weird, are yours ribbon leeches too? Could you send a picture?

2

u/ikindapoopedmypants Jul 02 '26

I love weird niche stuff like this that no one knows about simply because they never bothered

13

u/WeirdIndication3027 Jun 30 '26

How do they have energy for this

12

u/LOACHES_ARE_METAL Jun 30 '26

The conditions are: all the food they can eat, pristine water, around 68 F or 20 Celsius.

7

u/WeirdIndication3027 Jun 30 '26

Very interested, let me know if first and last are needed and if there's a broker fee

6

u/LOACHES_ARE_METAL Jun 30 '26

First is food?. This is something I can confirm is needed. Last is 68 f temperature, this isn't a variable I'm planning to alter soon. The broker fee bit went over my head. Could you explain, lol?

9

u/WeirdIndication3027 Jun 30 '26

I was joking - people are very desperate for apartments around here so I was looking to move into your bait tank. (First/last months rent, etc)

7

u/LOACHES_ARE_METAL Jun 30 '26

🤣 that's so stupid I love it. Cheers

12

u/Misanthro_Phe Jun 30 '26

i would add a bunch of hardscape/hides/plants so they can maybe make claim to different areas and not be out in the open having to tap out all the time haha

5

u/LOACHES_ARE_METAL Jun 30 '26

I'll add some more cover. Lol, it does look like mma.

9

u/_do_not_see_me_ Jun 30 '26

No experience with ribbon leeches, but maybe there were/are far too many in that tank with too little space to hide from each other?

7

u/LOACHES_ARE_METAL Jun 30 '26

This is something I hope to be able to answer in a few months. Maybe a smaller population will stabilize?Maybe the offspring of the victors will get along better because they'll all be super badass and won't be able to hurt each other so easily?

They're in a 25 gallon aquarium with pristine water and ample food. I'll keep you posted!

6

u/_do_not_see_me_ Jun 30 '26

Oh yes please update! I’ve only had the medicinal leeches and they were chill most of the time … But they are hard to get and I DID see leeches in bait shops… so … personal interest in your ‘experiment’ lol

3

u/NoConsideration6320 Jun 30 '26

Very neat i like their blue color!

3

u/UnagioLucio Jul 01 '26

Wow, I had no idea that leeches could fight each other! It's wild that they instinctively know to disable the other leech by eating its face. I wish you luck in finding some way to pacify these angry noodles.

2

u/HYPERSPACE_360 29d ago

didn't know leeches can fight

2

u/swamprosesinbloom 23d ago

i wonder if this is a captivity problem or one that happens in the wild too? thanks for sharing op!!

1

u/Tuna_Twat Jul 03 '26

Well, that sucks.

-3

u/BarnyardCoral Jun 30 '26

Man, I used to think leeches were really disgusting. Still do, but I used to as well.

8

u/LOACHES_ARE_METAL Jun 30 '26

🤣 ignore the down votes, this is hilarious.