Invertebrate

Pencil Urchin

Eucidaris tribuloides

Family Cidaridae
Environment Saltwater
Min Aquarium 30 gallons
Max Length 5.0 in.
pH 8.1-8.4
Temperature 72.0-78.0
Diet Omnivore
Difficulty Moderate
Reef Safe No
Pencil Urchin
river2000sg
Pencil Urchin
seemfrance
Pencil Urchin
gretzy
Pencil Urchin
leanne4134
Pencil Urchin
mattashapes
Pencil Urchin
monkeytank
Pencil Urchin
acmjax
Pencil urchin
sharkdog
Pencil Urchin
jmercer21

45 Aquariums

Reef Tank Thumbnail
tuttleb29 Reef Tank 75 Gallons
48'' x 18'' x 21''
5 months, 14 days
My Aquarium Thumbnail
chisholm My Aquarium 112 Gallons
48'' x 24'' x 24''
2 years, 3 months
William Dukes Thumbnail
acmjax William Dukes 265 Gallons
24'' x 84'' x 30''
1 year, 4 months
300 Thumbnail
acmjax 300 300 Gallons
72'' x 36'' x 27''
6 months, 4 days
Ron’s 120 Thumbnail
acmjax Ron’s 120 120 Gallons
60'' x 18'' x 26''
10 months
No photo
reefmaverick 200DD 200 Gallons
45'' x 36'' x 27''
7 years, 7 months
My Aquarium number 2 Thumbnail
leanne4134 My Aquarium number 2 180 Liters
60cm x 60cm x 55cm
4 years, 7 months
Ronnie Moore Thumbnail
acmjax Ronnie Moore 125 Gallons
? x 72'' x ?
1 year, 9 months
SPS Tank Thumbnail
nicksab SPS Tank 20 Gallons
24'' x 16'' x 12''
5 years, 2 months
My Aquarium Thumbnail
seemfrance My Aquarium 150 Gallons
72'' x 18'' x ?
9 months, 17 days
No photo
vkernus My Aquarium 90 Gallons
48'' x 18'' x 24''
6 years, 5 months
20g Nano Thumbnail
scags101 20g Nano 20 Gallons
30'' x 12'' x 12''
5 years, 3 months
Matt's 180g Mixed Reef Thumbnail
dmatt56 Matt's 180g Mixed Reef 180 Gallons
72'' x 24'' x 24''
10 years, 5 months
Bikini bottom Thumbnail
aspott Bikini bottom 54 Gallons
4 years, 9 months
No photo
ddcaquarist Near Shore T3 5,670 Gallons
2,670'' x 1,180'' x 1,500''
4 months, 25 days
Biocube Thumbnail
monkeytank Biocube 29 Gallons
12'' x 12'' x 12''
1 year, 11 months
No photo
ddcaquarist Touch Pool T4 1,188 Gallons
4,000'' x 450'' x 550''
4 months, 25 days
Saltwater Breeder Thumbnail
ulrichvonlich Saltwater Breeder 40 Gallons
1 year, 7 months
Innovative Marine 10 NUVO Fusion PRO AIO Aquarium Thumbnail
jlplapinger Innovative Marine 10 NUVO Fusion PRO AIO Aquarium 10 Gallons
9 months, 27 days
Sharkdog Thumbnail
sharkdog Sharkdog 2 years, 9 days
Rankin-Reefer Thumbnail
rankin-reefers Rankin-Reefer 55 Gallons
48'' x 12.5'' x 20''
1 year, 6 months
My Aquarium Thumbnail
aresgraphix My Aquarium 45 Gallons
8 years, 3 months
Crowded Reefs Thumbnail
crowded_reefs Crowded Reefs 233 Gallons
30'' x 60'' x 30''
1 year, 8 months
Office Tank Thumbnail
jmercer21 Office Tank 55 Gallons
48'' x 12'' x 18''
3 years, 23 days
Parks Home Thumbnail
acmjax Parks Home 92 Gallons
34'' x 48'' x 24''
7 months, 24 days
Reefer 350 Thumbnail
river2000sg Reefer 350 350 Liters
120cm x 53cm x 50cm
7 years, 5 months
Big Frag and Cube System Thumbnail
jam583 Big Frag and Cube System 200 Gallons
5 years, 3 months
No photo
daweeg My Aquarium 540 Liters
8 months, 27 days
No photo
jamesrhenson My in wall reef 125 Gallons
72'' x 22'' x 18''
13 years, 3 months
No photo
jonathan05 My Aquarium 300 Liters
150cm x 5cm x ?
1 year, 9 months
ZZW Reef Thumbnail
jesusfreak_mtp ZZW Reef 380 Gallons
96'' x 36'' x 26''
5 years, 11 months
ToolFan's Tank Thumbnail
xxtoolfanxx ToolFan's Tank 75 Gallons
48'' x 21'' x 18''
5 years, 9 months
125 gal Thumbnail
luca1998 125 gal 124.7 Gallons
48'' x 30'' x 20''
8 years, 9 days
Rankin-Reefer Thumbnail
rankinreefers Rankin-Reefer 55 Gallons
48'' x 12.5'' x 20''
1 year, 7 months
No photo
seras_fishtank Clownfish_reef 16 Gallons
12'' x 12'' x 12''
2 years, 6 months
55G Aggressive Tank Thumbnail
mling 55G Aggressive Tank 55 Gallons
8 years, 3 months
Mini-Reef Thumbnail
chibargies Mini-Reef 1 year, 9 months
MATTAshapes Thumbnail
mattashapes MATTAshapes 700 Liters
150cm x 60cm x 60cm
1 year, 11 months
My Aquarium Thumbnail
barlowboy My Aquarium 75 Gallons
48'' x 18'' x 22''
8 months, 21 days
Office Reef Thumbnail
jedi6 Office Reef 20 Gallons
24'' x 12'' x 14''
7 years, 3 months
Chen's First Mixed Reef Thumbnail
gretzy Chen's First Mixed Reef 400 Liters
132cm x 52cm x 58cm
4 years, 4 months
Office Tank Thumbnail
jmercer21 Office Tank 55 Gallons
48'' x 12'' x 18''
4 years, 4 days
Surfrider Reef Thumbnail
mschneider90265 Surfrider Reef 66 Gallons
38'' x 21'' x 26.2''
7 years, 7 months
75 Reef Thumbnail
richocet83 75 Reef 75 Gallons
48'' x 22'' x 18''
8 years, 8 months
125g Mixed Reef Thumbnail
percyjgp 125g Mixed Reef 125 Gallons
72'' x 18'' x 24''
7 years, 10 months