Not sure. There are some videos on YouTube showing many kept together. You might pose this question to the "Mormyrid Keepers" group on Facebook. Not sure many are monitoring these forums, though I appreciate you posting here!
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
Schooling behavior
Not sure. There are some videos on YouTube showing many kept together. You might pose this question to the "Mormyrid Keepers" group on Facebook. Not sure many are monitoring these forums, though I appreciate you posting here!