lol they must have been clever enough to realise the a tomato shouldn't be that small 
Anyway i've read a lot about amano shrimps and they seem to be very very different from other shrimps. Other shrimps are more quiet and they suffer from various aggressions from other fish but amano shrimps are quiet agressive shrimps i guess from the information i read about them... Thats why i was going to add some amano since they have a bigger chance to stay alive. 
*One little note is that shrimps are very hard to find in malta (not talking about cherry, amano or tiger shrimp) because there are various types of shrimps if you search about them and very nice shrimps too, but very little hobbyists grow these kind of creatures. I assume that they're pretty interesting.