Adding 4 new Otos via drip method. That will bring my pack up to 6. I usually try and do 1 Oto per 10 gallons, but Otos are extremely difficult to acclimate- even if you carefully and slowly introduce them. I usually figure that one may not make it. If all 4 make it- great!
These poor guys are malnourished and were on sale at PetSmart (when I see fish on sale, I figure they will only last a few more weeks in the pet store conditions- so they're trying to get rid of them fast) . They'll get fattened up in no time in their new home- hopefully.
This is also what my tank looks like with all 4 lamps going at once.