Start with the tank you already have.
A local fish search is usually the last step in a longer decision. Before you come by, take a clear look at the aquarium: its footprint, water stability, current residents, and the places a small group can use for cover. Pygmy Corydoras are tiny, but they are active social fish. The right choice is a school that fits comfortably into a calm, established aquarium, not simply the smallest group that will physically fit.
Bob's care guidance starts with 6 to 8 Pygmy Corydoras for a small school, with 10 or more ideal when the tank gives them room. A 10-gallon aquarium is the minimum starting point, but the shape of the tank matters as much as the number on the label. Fine sand, gentle filtration, planted cover, and open space make it easier for the fish to forage and move together. If the tank is still cycling, newly set up, or already crowded, it is worth waiting until it is ready.
Bring the useful details with you.
Knowing your aquarium size, temperature, pH, substrate, and current tankmates makes a stocking conversation much clearer. Pygmy Corydoras suit peaceful community tanks with small tetras, rasboras, shrimp, or snails. They are not a match for aggressive fish or fast feeders that take over every meal. If you are unsure about a companion species, ask before you add a school. A quick check is much easier than trying to correct a crowded or stressful community later.
It also helps to have a feeding plan ready. Pygmy Corydoras are omnivores, and the care guide recommends a varied routine of quality flakes, sinking pellets, frozen foods, and occasional live foods. The current fish listings include a Pygmy Bites sample to help with acclimation, while the shop also lists Pygmy Bites for ongoing feeding. The fine grain size is useful for small mouths, but it still matters to watch a community tank at mealtime and make sure the whole school gets its share.