"Billy" wrote in message
...

IMO, and IME, Otociclus (oto's) and Siamese Algae Eaters. The former
are renowned for being fragile, when I want some I generally buy
several more than what I need, as invaribly some will die within the
first few weeks. On rare occasion, Oto's will become "attack Oto's",
developing a taste for the slime coat on fish. I have not had this
happen to me...yet. They are, however, efficient little lawnmowers.

I second that. Hardest-working fish I've ever seen. A bit difficult to
acclimatise, but once they have settled in, they keep going for years.

For the SAE's, keep in mind that they are jumpers and not suitable
for an open tank. They also get fairly large (5" or so) and are quite
lively -- if you have shy/slow fish, they may be a bit too active.

Amano shrimp also have an excellent reputation as algae eaters.

Cheers,

Michi.