Resembling colorful darts in size, shape, and movement, these aptly-named fish are a great choice for novices and Nano tank fans. Dartfish need numerous rock crevices (in which to “dart”, as you might suspect!) and other shelters, and do not compete well with larger fishes. Proper feeding takes a bit of effort, as they rarely swim far from favored shelters for food, and can only handle tiny frozen and live copepods, mysids, shrimp, and similar foods – but owners invariably feel they are worth it!