Morse Code TetraMorse Code Tetra (Hemigrammus sp.) is an unconfirmed Hemigrammus species traded under the descriptive name 'Morse Code' — the pattern of dark dots and dashes along the lateral line resembles the dots and dashes of Morse code telegraphy. A trade name fish with collector appeal.Feeding & Care Tip: Sera Vipan Tropical Flakes and Hikari Micro Pellets make excellent daily staples. Supplement 2–3× per week with Hikari Frozen or Freeze-Dried Bloodworms, Hikari Frozen or Freeze-Dried Baby Brine Shrimp, or Hikari Vibra Bites. Feed small amounts 2–3 times daily.Origin from South American streams — exact species and locality unconfirmed. Standard soft, slightly acidic water conditions preferred.Keep in groups of at least 8. The distinctive dot-dash pattern is most visible under good lighting. Peaceful community tetra.An attractively named trade fish with a distinctive and unusual marking pattern.Care & Ideal Parameters Difficulty Easy Temperament Peaceful — schooling community Typical Adult Size 2.0 inches (5 cm) Min. Group Size 8 minimum Ideal Temp 73–82°F (23–28°C) Ideal pH 6.0–7.5 Ideal GH 3–12 dGH Ideal KH 1–6 dKH Staple Food Sera Vipan Tropical Flakes; Hikari Micro Pellets Treat / Supplement Hikari Frozen or Freeze-Dried Bloodworms; Hikari Frozen or Freeze-Dried Baby Brine Shrimp; Hikari Vibra Bites Origin South America (exact species unconfirmed) Notes Hemigrammus sp. — unconfirmed. Dot-dash Morse code pattern along lateral line.