Bolbitis Difformis

Bolbitis difformis

Plantae›Tracheophyta›Magnoliopsida›Dryopteridaceae

📍 Southeast Asia

Sometimes sold as 'Baby Bolbitis' or 'Mini Bolbitis', this small aquatic fern produces deeply divided fronds similar to the full-size Bolbitis heudelotii but significantly more compact and fine-textured. It attaches to driftwood and rock and grows well in moderate flow. One of the finest detail ferns in the hobby for Iwagumi and Nature Aquarium style.

Tank Mates

Amano Shrimp

Gentle algae grazers that will not damage delicate fronds and help maintain tank cleanliness

excellent

Red Cherry Shrimp

Small, peaceful shrimp that browse algae without harming the plant's fine foliage

excellent

Otocinclus

Peaceful bottom feeders that respect plants and help control algae on hardscape

good

Anubias Nana

Excellent companion plant with similar low-light tolerance and slow growth rate; both attach to hardscape

excellent

Java Moss

Compatible low-light plant that creates a natural, detailed aquascape when combined with Mini Bolbitis

excellent

Ember Tetra

Small, peaceful schooling fish that won't uproot or damage the delicate fern

good

Common Diseases

Rhizome Rot

Symptoms

Blackening or softening of the rhizome, visible decay, frond loss, mushy texture when touched

Treatment

Improve water circulation and reduce organic buildup; perform partial water changes; remove affected portions of rhizome with sterile tools; ensure substrate is not compacted around the plant

Algae Overgrowth (Black Beard Algae)

Symptoms

Dark, hair-like algae coating fronds and rhizome, reduced photosynthesis, plant decline

Treatment

Increase water circulation, reduce light duration to 8-10 hours daily, perform manual removal with a soft brush, introduce algae-eating shrimp (Amano or Red Cherry), or use targeted spot treatments with hydrogen peroxide

Nutrient Deficiency

Symptoms

Pale or yellowing fronds, stunted growth, transparent or thin new leaves

Treatment

Dose liquid all-in-one fertilizer 1-2 times weekly; ensure adequate macro and micronutrients; consider adding CO2 supplementation; perform regular water changes to maintain nutrient balance

Melting

Symptoms

Rapid frond deterioration, transparent or dissolving leaves, overall plant collapse

Treatment

Acclimate slowly to new tank conditions over 2-3 weeks; maintain stable water parameters (pH 6.0-7.5, temperature 22-28°C); ensure adequate light and water circulation; avoid sudden changes in CO2 or fertilization