My roommate has a 1.5 gallon aquarium and I'm trying to help her find something that can go in it. I have suggested a live plant and maybe two snails? What else can live in such a small space? Freshwater preferred.
>shrimp (all different colors red/blue/green/yellow/white/transparent/polka dotted/stripes etc. etc. etc)
>snails (check out bumblebee snails)
>african dwarf frogs
>crayfish (only get one, and make sure it's a species that doesn't grow too large for the tank)
>white cloud mountain minnows
>golden white cloud mountain minnows
>lucky bamboo (the stem and roots stay in the water, but the leaves MUST be in open air)
>marimo moss balls
>elephants ear (same as lucky bamboo)
Hope this points you in the right direction, I strongly recommend you google how to properly cycle a tank before you do anything though, otherwise whatever you put in there will die due to ammonia poisoning before the beneficial bacteria can establish itself.
They can technically be kept in smaller, but 2.5 gallons is really the smallest a tank can be to be safely heated. Betta are tropical fish and their water should be about 80 degrees.
In my opinion, buying them from those isn't cruel. I kinda see it as rescuing them.
Please don't keep minnows in a 1.5 gallon tank.
Dwarf frogs need a heater, so they're 2.5gal and up as well.
I just googled the crayfish and apparently they need 10 gallons for even one. You could probably keep some shrimp or a snail, but that's about it.
Triops or fairy shrimp are pretty nice for small tanks. You order the eggs, put them in the tank where they hatch within a few days and then rapidly grow. They also only live a few months.
You know this is done as it's the least painful way to keep multiple betta in small space with high turnover, right? If you stick them in a partitioned tank it will freak the males out and the frequent turnover will make the females get sick and die. Their fins are delicate and netting could injure them. The cups aren't a forever home and often the cups say so printed right on the cup.
Keeping them in small cups with a high turnover is kinder than treating them like normal fish because they don't have the same needs as most fish.
Seems like you can get them easily live on eBay and such, and for little cost. I'm not sure how big a 1.5 gal is, but though it does sound a bit small for pretty much anything not a plant, it might work. I'd still suggest getting a bigger tank if you want crawfish. They're pretty cool though, and super easy to keep. If you want something dumb and easy to stick on your desk, go for one of these guys.
Not OP but similar question.
I had a 1 gallon heated and filtered tank for 1 ghost shrimp and a 5 gallon heated and filtered tank for my betta. (Both live plants and air stones and all that great stuff).
The ghost shrimp has passed however after about a year and my girlfriend out of sympathy and lack of knowledge ordered 12 juvenile cherry shrimp. I now have no idea what to do because I don't think my 1 gallon could support all 12, but don't want the betta to have a shrimp eating field day. No funds to get a second 5 gallon currently.
this is such a defeatist mentality
believe it or not, it is just creating more demand. the store doesn't give a shit if you think you're saving them when you buy them, all they see is another sale. if anything it makes them care even less about the quality of the life of the fish, because people will buy them regardless
this mentality is also why pet overpopulation is such an issue. "hurr my dog is just having one litter, it doesn't matter". it adds up, really fucking fast. but that's just one example.