So I new to fish keeping and i have more or less an idea of wat to stock my open top 20g long (currently i have only 4 platies and an oto) however, im looking for that one fish that will tie my tank together. my stocking plans are as follows: 6 platy( 2 males and 4 females), about 3-4 otocinclus(haven't decided yet), and 10 cardinal tetras(although neon tetras will go easier on my bio-load so im undicided on this too). i was planning on keeping cherry shrimp but i dont want to risk them jumping out and im looking into black khuli loaches (i really like their eel-like body). My tank will be planted but i doubt it'll be planted heavily. Any ideas/suggestions or advice?