QUOTE(Callie @ Mar 18 2008, 04:46 PM)

I have two spare tanks (one is 5 gallons, the other is 10)
1. can i have a 'tropical' setup in a tank as small as 5 gallons?
2. are tropical fish particularly difficult to care for (I'm thinking of getting guppies, or platies, or swordtails....or maybe even some loaches)
3. i know the 'one inch of fish per gallon' rule- but does that applie to all tropical fish?----->i get the feeling it dosn't.
4. would it be smarter to go bigger> setup the 10 gallon instead?
1. Yes, you can!
2. No, not necessarily. Different fish require different care. Some are real easy some are extremely difficult.
3. No. Some fish, such as tetras, are schooling fish. Schooling fish are generally very active and require more width to swim around. Some fish, like angels, require more hight than width. All fish are unique but don't let that scare you away.
4. As they say "Bigger is always better!"
*Be sure to do research on each species! Some of the fish I listed can only live in a 10 gallon(Not a 5 gallon) or they have special requirements(Must be only fish).*
Suggestions for a 2.5 - 10 gallon:
A male or female betta.(wild or domesticate species)
Shrimp(Cherries, Ghost, Crystal, Caridina, +others).
Snails.
Carinotetraodon travancoricus and Carinotetraodon imitator(Dwarf Puffer)
Brachygobius aggregatus(Bumblebee Goby)
Hara jerdoni(Asian Stone Catfish)
Heterandria formosa (Least Killie)
Microglanis iheringi (Bumblebee catfish) //Do not confuse with Pseudomystus siamensis which reach 6 inches//
Corydoras pygmaeus(Pygmy Cory)
Poecilia wingei (Endler's Livebearer)
Microrasbora sp .(Galaxy Rasboras)
Carnegiella myersi(Pygmy Hatchetfish)
Danio erythromicron(Zebra Rasbora)
Mikrogeophagus ramirezi(Ram Cichlid)
Dario dario(Scarlet)
Nannostomus mortenthaleri(Red Pencil Fish)
Nannostomus marginatus(Dwarf Pencil Fish)
Pseudomugil tenellus
Apistogramma cacatuoides(Cockatoo Dwarf Cichlid)
I'm tired, but I could probably think of some other fish tomorrow.
QUOTE(FishCrazy @ Mar 18 2008, 05:09 PM)

you could use the 5 gallon for 3 female bettas (must be placed in at the same time)
and for the 10 gallon have a school of guppies and maybie a snail...or a oto
3 bettas in a 5 gallon is too many. 1 would be the best choice but 2 females are "ok".