CREATE TABLE table_204_869 (id DECIMAL, "species" TEXT, "country of origin" TEXT, "total released" DECIMAL, "first release" TEXT, "last release" TEXT, "areas of release" TEXT, "areas established" TEXT, "pasture type" TEXT)

were more bubas bison or copris hispanus linnaeus released ?
SELECT "species" FROM table_204_869 WHERE "species" IN ('bubas bison', 'copris hispanus linnaeus') ORDER BY "total released" DESC LIMIT 1
SELECT "species" FROM "table_204_869" WHERE "species" IN ('bubas bison', 'copris hispanus linnaeus') ORDER BY "total released" DESC NULLS LAST LIMIT 1